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Finding the Fourth Proportional to 12,603.48, 17,392.95 and 6,938.88

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Solution

The fourth proportional to 12,603.48, 17,392.95 and 6,938.88 is: 9,575.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.48 : 17,392.95 = 6,938.88 : x
  2. Step 2: Convert to fraction form
    12,603.48/17,392.95 = 6,938.88/x
  3. Step 3: Cross multiply
    12,603.48x = 17,392.95 × 6,938.88
  4. Step 4: Simplify right side
    12,603.48x = 120,687,592.90
  5. Step 5: Solve for x
    x = 120,687,592.90/12,603.48
  6. Step 6: Final answer
    x = 9,575.74

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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.