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Finding the Fourth Proportional to 21,459.08, 32,201.18 and 8,978.06

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Solution

The fourth proportional to 21,459.08, 32,201.18 and 8,978.06 is: 13,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.08 : 32,201.18 = 8,978.06 : x
  2. Step 2: Convert to fraction form
    21,459.08/32,201.18 = 8,978.06/x
  3. Step 3: Cross multiply
    21,459.08x = 32,201.18 × 8,978.06
  4. Step 4: Simplify right side
    21,459.08x = 289,104,221.95
  5. Step 5: Solve for x
    x = 289,104,221.95/21,459.08
  6. Step 6: Final answer
    x = 13,472.35

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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.