Home / 28,088.60-38,761.65-15,341.28

Finding the Fourth Proportional to 28,088.60, 38,761.65 and 15,341.28

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Solution

The fourth proportional to 28,088.60, 38,761.65 and 15,341.28 is: 21,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.60 : 38,761.65 = 15,341.28 : x
  2. Step 2: Convert to fraction form
    28,088.60/38,761.65 = 15,341.28/x
  3. Step 3: Cross multiply
    28,088.60x = 38,761.65 × 15,341.28
  4. Step 4: Simplify right side
    28,088.60x = 594,653,325.91
  5. Step 5: Solve for x
    x = 594,653,325.91/28,088.60
  6. Step 6: Final answer
    x = 21,170.63

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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.