Home / 20,440.43-28,128.08-18,088.19

Finding the Fourth Proportional to 20,440.43, 28,128.08 and 18,088.19

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Solution

The fourth proportional to 20,440.43, 28,128.08 and 18,088.19 is: 24,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.43 : 28,128.08 = 18,088.19 : x
  2. Step 2: Convert to fraction form
    20,440.43/28,128.08 = 18,088.19/x
  3. Step 3: Cross multiply
    20,440.43x = 28,128.08 × 18,088.19
  4. Step 4: Simplify right side
    20,440.43x = 508,785,959.96
  5. Step 5: Solve for x
    x = 508,785,959.96/20,440.43
  6. Step 6: Final answer
    x = 24,891.16

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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.