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Finding the Fourth Proportional to 21,590.80, 32,387 and 7,548.08

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Solution

The fourth proportional to 21,590.80, 32,387 and 7,548.08 is: 11,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.80 : 32,387 = 7,548.08 : x
  2. Step 2: Convert to fraction form
    21,590.80/32,387 = 7,548.08/x
  3. Step 3: Cross multiply
    21,590.80x = 32,387 × 7,548.08
  4. Step 4: Simplify right side
    21,590.80x = 244,459,666.96
  5. Step 5: Solve for x
    x = 244,459,666.96/21,590.80
  6. Step 6: Final answer
    x = 11,322.40

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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.