Home / 28,162.46-38,865.39-15,587.21

Finding the Fourth Proportional to 28,162.46, 38,865.39 and 15,587.21

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Solution

The fourth proportional to 28,162.46, 38,865.39 and 15,587.21 is: 21,511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.46 : 38,865.39 = 15,587.21 : x
  2. Step 2: Convert to fraction form
    28,162.46/38,865.39 = 15,587.21/x
  3. Step 3: Cross multiply
    28,162.46x = 38,865.39 × 15,587.21
  4. Step 4: Simplify right side
    28,162.46x = 605,802,995.66
  5. Step 5: Solve for x
    x = 605,802,995.66/28,162.46
  6. Step 6: Final answer
    x = 21,511.01

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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.