Home / 15,453.78-21,320.18-10,082.53

Finding the Fourth Proportional to 15,453.78, 21,320.18 and 10,082.53

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Solution

The fourth proportional to 15,453.78, 21,320.18 and 10,082.53 is: 13,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.78 : 21,320.18 = 10,082.53 : x
  2. Step 2: Convert to fraction form
    15,453.78/21,320.18 = 10,082.53/x
  3. Step 3: Cross multiply
    15,453.78x = 21,320.18 × 10,082.53
  4. Step 4: Simplify right side
    15,453.78x = 214,961,368.50
  5. Step 5: Solve for x
    x = 214,961,368.50/15,453.78
  6. Step 6: Final answer
    x = 13,909.96

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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.