Home / 20,925.34-28,875.69-11,493.90

Finding the Fourth Proportional to 20,925.34, 28,875.69 and 11,493.90

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Solution

The fourth proportional to 20,925.34, 28,875.69 and 11,493.90 is: 15,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.34 : 28,875.69 = 11,493.90 : x
  2. Step 2: Convert to fraction form
    20,925.34/28,875.69 = 11,493.90/x
  3. Step 3: Cross multiply
    20,925.34x = 28,875.69 × 11,493.90
  4. Step 4: Simplify right side
    20,925.34x = 331,894,293.29
  5. Step 5: Solve for x
    x = 331,894,293.29/20,925.34
  6. Step 6: Final answer
    x = 15,860.88

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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.