Home / 15,378.71-21,232.43-12,552.82

Finding the Fourth Proportional to 15,378.71, 21,232.43 and 12,552.82

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Solution

The fourth proportional to 15,378.71, 21,232.43 and 12,552.82 is: 17,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378.71 : 21,232.43 = 12,552.82 : x
  2. Step 2: Convert to fraction form
    15,378.71/21,232.43 = 12,552.82/x
  3. Step 3: Cross multiply
    15,378.71x = 21,232.43 × 12,552.82
  4. Step 4: Simplify right side
    15,378.71x = 266,526,922.61
  5. Step 5: Solve for x
    x = 266,526,922.61/15,378.71
  6. Step 6: Final answer
    x = 17,330.90

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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.