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Finding the Fourth Proportional to 21,638.61, 32,472.11 and 7,598.28

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Solution

The fourth proportional to 21,638.61, 32,472.11 and 7,598.28 is: 11,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.61 : 32,472.11 = 7,598.28 : x
  2. Step 2: Convert to fraction form
    21,638.61/32,472.11 = 7,598.28/x
  3. Step 3: Cross multiply
    21,638.61x = 32,472.11 × 7,598.28
  4. Step 4: Simplify right side
    21,638.61x = 246,732,021.61
  5. Step 5: Solve for x
    x = 246,732,021.61/21,638.61
  6. Step 6: Final answer
    x = 11,402.40

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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.