Home / 21,867.20-32,800.80-9,385.10

Finding the Fourth Proportional to 21,867.20, 32,800.80 and 9,385.10

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Solution

The fourth proportional to 21,867.20, 32,800.80 and 9,385.10 is: 14,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.20 : 32,800.80 = 9,385.10 : x
  2. Step 2: Convert to fraction form
    21,867.20/32,800.80 = 9,385.10/x
  3. Step 3: Cross multiply
    21,867.20x = 32,800.80 × 9,385.10
  4. Step 4: Simplify right side
    21,867.20x = 307,838,788.08
  5. Step 5: Solve for x
    x = 307,838,788.08/21,867.20
  6. Step 6: Final answer
    x = 14,077.65

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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.