Home / 19,359.43-29,035.67-5,128

Finding the Fourth Proportional to 19,359.43, 29,035.67 and 5,128

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Solution

The fourth proportional to 19,359.43, 29,035.67 and 5,128 is: 7,691.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.43 : 29,035.67 = 5,128 : x
  2. Step 2: Convert to fraction form
    19,359.43/29,035.67 = 5,128/x
  3. Step 3: Cross multiply
    19,359.43x = 29,035.67 × 5,128
  4. Step 4: Simplify right side
    19,359.43x = 148,894,915.76
  5. Step 5: Solve for x
    x = 148,894,915.76/19,359.43
  6. Step 6: Final answer
    x = 7,691.08

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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.