Home / 28,162.23-38,863.29-15,415.10

Finding the Fourth Proportional to 28,162.23, 38,863.29 and 15,415.10

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Solution

The fourth proportional to 28,162.23, 38,863.29 and 15,415.10 is: 21,272.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.23 : 38,863.29 = 15,415.10 : x
  2. Step 2: Convert to fraction form
    28,162.23/38,863.29 = 15,415.10/x
  3. Step 3: Cross multiply
    28,162.23x = 38,863.29 × 15,415.10
  4. Step 4: Simplify right side
    28,162.23x = 599,081,501.68
  5. Step 5: Solve for x
    x = 599,081,501.68/28,162.23
  6. Step 6: Final answer
    x = 21,272.52

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Half scale
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Double scale
Find fourth proportional to 28,163.23, 38,864.67 and 15,416.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.