Home / 21,808.53-30,097.32-12,377.70

Finding the Fourth Proportional to 21,808.53, 30,097.32 and 12,377.70

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Solution

The fourth proportional to 21,808.53, 30,097.32 and 12,377.70 is: 17,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.53 : 30,097.32 = 12,377.70 : x
  2. Step 2: Convert to fraction form
    21,808.53/30,097.32 = 12,377.70/x
  3. Step 3: Cross multiply
    21,808.53x = 30,097.32 × 12,377.70
  4. Step 4: Simplify right side
    21,808.53x = 372,535,385.39
  5. Step 5: Solve for x
    x = 372,535,385.39/21,808.53
  6. Step 6: Final answer
    x = 17,082.10

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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.