Home / 19,279.47-28,915.19-7,429.17

Finding the Fourth Proportional to 19,279.47, 28,915.19 and 7,429.17

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Solution

The fourth proportional to 19,279.47, 28,915.19 and 7,429.17 is: 11,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.47 : 28,915.19 = 7,429.17 : x
  2. Step 2: Convert to fraction form
    19,279.47/28,915.19 = 7,429.17/x
  3. Step 3: Cross multiply
    19,279.47x = 28,915.19 × 7,429.17
  4. Step 4: Simplify right side
    19,279.47x = 214,815,961.24
  5. Step 5: Solve for x
    x = 214,815,961.24/19,279.47
  6. Step 6: Final answer
    x = 11,142.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.