Home / 20,924.56-28,875.90-11,493.70

Finding the Fourth Proportional to 20,924.56, 28,875.90 and 11,493.70

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Solution

The fourth proportional to 20,924.56, 28,875.90 and 11,493.70 is: 15,861.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.56 : 28,875.90 = 11,493.70 : x
  2. Step 2: Convert to fraction form
    20,924.56/28,875.90 = 11,493.70/x
  3. Step 3: Cross multiply
    20,924.56x = 28,875.90 × 11,493.70
  4. Step 4: Simplify right side
    20,924.56x = 331,890,931.83
  5. Step 5: Solve for x
    x = 331,890,931.83/20,924.56
  6. Step 6: Final answer
    x = 15,861.31

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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.