Home / 20,411.58-28,168.12-11,337.02

Finding the Fourth Proportional to 20,411.58, 28,168.12 and 11,337.02

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Solution

The fourth proportional to 20,411.58, 28,168.12 and 11,337.02 is: 15,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.58 : 28,168.12 = 11,337.02 : x
  2. Step 2: Convert to fraction form
    20,411.58/28,168.12 = 11,337.02/x
  3. Step 3: Cross multiply
    20,411.58x = 28,168.12 × 11,337.02
  4. Step 4: Simplify right side
    20,411.58x = 319,342,539.80
  5. Step 5: Solve for x
    x = 319,342,539.80/20,411.58
  6. Step 6: Final answer
    x = 15,645.17

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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.