Home / 14,520.16-20,040.72-9,221.20

Finding the Fourth Proportional to 14,520.16, 20,040.72 and 9,221.20

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Solution

The fourth proportional to 14,520.16, 20,040.72 and 9,221.20 is: 12,727.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.16 : 20,040.72 = 9,221.20 : x
  2. Step 2: Convert to fraction form
    14,520.16/20,040.72 = 9,221.20/x
  3. Step 3: Cross multiply
    14,520.16x = 20,040.72 × 9,221.20
  4. Step 4: Simplify right side
    14,520.16x = 184,799,487.26
  5. Step 5: Solve for x
    x = 184,799,487.26/14,520.16
  6. Step 6: Final answer
    x = 12,727.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.