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Finding the Fourth Proportional to 21,988, 32,982 and 5,572

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Solution

The fourth proportional to 21,988, 32,982 and 5,572 is: 8,358

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988 : 32,982 = 5,572 : x
  2. Step 2: Convert to fraction form
    21,988/32,982 = 5,572/x
  3. Step 3: Cross multiply
    21,988x = 32,982 × 5,572
  4. Step 4: Simplify right side
    21,988x = 183,775,704
  5. Step 5: Solve for x
    x = 183,775,704/21,988
  6. Step 6: Final answer
    x = 8,358

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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.