Home / 20,528.86-30,767.76-9,423.76

Finding the Fourth Proportional to 20,528.86, 30,767.76 and 9,423.76

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Solution

The fourth proportional to 20,528.86, 30,767.76 and 9,423.76 is: 14,123.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.86 : 30,767.76 = 9,423.76 : x
  2. Step 2: Convert to fraction form
    20,528.86/30,767.76 = 9,423.76/x
  3. Step 3: Cross multiply
    20,528.86x = 30,767.76 × 9,423.76
  4. Step 4: Simplify right side
    20,528.86x = 289,947,985.98
  5. Step 5: Solve for x
    x = 289,947,985.98/20,528.86
  6. Step 6: Final answer
    x = 14,123.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.