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Finding the Fourth Proportional to 15,988.49, 23,978.58 and 6,631.17

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Solution

The fourth proportional to 15,988.49, 23,978.58 and 6,631.17 is: 9,945.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.49 : 23,978.58 = 6,631.17 : x
  2. Step 2: Convert to fraction form
    15,988.49/23,978.58 = 6,631.17/x
  3. Step 3: Cross multiply
    15,988.49x = 23,978.58 × 6,631.17
  4. Step 4: Simplify right side
    15,988.49x = 159,006,040.34
  5. Step 5: Solve for x
    x = 159,006,040.34/15,988.49
  6. Step 6: Final answer
    x = 9,945.03

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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.