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Finding the Fourth Proportional to 10,374, 14,316.28 and 5,658.40

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Solution

The fourth proportional to 10,374, 14,316.28 and 5,658.40 is: 7,808.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,374 : 14,316.28 = 5,658.40 : x
  2. Step 2: Convert to fraction form
    10,374/14,316.28 = 5,658.40/x
  3. Step 3: Cross multiply
    10,374x = 14,316.28 × 5,658.40
  4. Step 4: Simplify right side
    10,374x = 81,007,238.75
  5. Step 5: Solve for x
    x = 81,007,238.75/10,374
  6. Step 6: Final answer
    x = 7,808.68

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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.