Home / 28,158.83-38,864.58-20,114.32

Finding the Fourth Proportional to 28,158.83, 38,864.58 and 20,114.32

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Solution

The fourth proportional to 28,158.83, 38,864.58 and 20,114.32 is: 27,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.83 : 38,864.58 = 20,114.32 : x
  2. Step 2: Convert to fraction form
    28,158.83/38,864.58 = 20,114.32/x
  3. Step 3: Cross multiply
    28,158.83x = 38,864.58 × 20,114.32
  4. Step 4: Simplify right side
    28,158.83x = 781,734,598.79
  5. Step 5: Solve for x
    x = 781,734,598.79/28,158.83
  6. Step 6: Final answer
    x = 27,761.62

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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.