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Finding the Fourth Proportional to 21,931.97, 32,886.56 and 9,445.11

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Solution

The fourth proportional to 21,931.97, 32,886.56 and 9,445.11 is: 14,162.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.97 : 32,886.56 = 9,445.11 : x
  2. Step 2: Convert to fraction form
    21,931.97/32,886.56 = 9,445.11/x
  3. Step 3: Cross multiply
    21,931.97x = 32,886.56 × 9,445.11
  4. Step 4: Simplify right side
    21,931.97x = 310,617,023.88
  5. Step 5: Solve for x
    x = 310,617,023.88/21,931.97
  6. Step 6: Final answer
    x = 14,162.75

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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.