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Finding the Fourth Proportional to 21,627.96, 32,417.94 and 9,929.40

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Solution

The fourth proportional to 21,627.96, 32,417.94 and 9,929.40 is: 14,883.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.96 : 32,417.94 = 9,929.40 : x
  2. Step 2: Convert to fraction form
    21,627.96/32,417.94 = 9,929.40/x
  3. Step 3: Cross multiply
    21,627.96x = 32,417.94 × 9,929.40
  4. Step 4: Simplify right side
    21,627.96x = 321,890,693.44
  5. Step 5: Solve for x
    x = 321,890,693.44/21,627.96
  6. Step 6: Final answer
    x = 14,883.08

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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.