Home / 20,966.56-28,944.47-13,317.53

Finding the Fourth Proportional to 20,966.56, 28,944.47 and 13,317.53

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Solution

The fourth proportional to 20,966.56, 28,944.47 and 13,317.53 is: 18,384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.56 : 28,944.47 = 13,317.53 : x
  2. Step 2: Convert to fraction form
    20,966.56/28,944.47 = 13,317.53/x
  3. Step 3: Cross multiply
    20,966.56x = 28,944.47 × 13,317.53
  4. Step 4: Simplify right side
    20,966.56x = 385,468,898.94
  5. Step 5: Solve for x
    x = 385,468,898.94/20,966.56
  6. Step 6: Final answer
    x = 18,384.93

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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.