Home / 28,162.61-38,864.05-15,415.74

Finding the Fourth Proportional to 28,162.61, 38,864.05 and 15,415.74

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Solution

The fourth proportional to 28,162.61, 38,864.05 and 15,415.74 is: 21,273.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.61 : 38,864.05 = 15,415.74 : x
  2. Step 2: Convert to fraction form
    28,162.61/38,864.05 = 15,415.74/x
  3. Step 3: Cross multiply
    28,162.61x = 38,864.05 × 15,415.74
  4. Step 4: Simplify right side
    28,162.61x = 599,118,090.15
  5. Step 5: Solve for x
    x = 599,118,090.15/28,162.61
  6. Step 6: Final answer
    x = 21,273.53

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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.