Home / 14,062.20-21,117.60-9,931.20

Finding the Fourth Proportional to 14,062.20, 21,117.60 and 9,931.20

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Solution

The fourth proportional to 14,062.20, 21,117.60 and 9,931.20 is: 14,913.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,062.20 : 21,117.60 = 9,931.20 : x
  2. Step 2: Convert to fraction form
    14,062.20/21,117.60 = 9,931.20/x
  3. Step 3: Cross multiply
    14,062.20x = 21,117.60 × 9,931.20
  4. Step 4: Simplify right side
    14,062.20x = 209,723,109.12
  5. Step 5: Solve for x
    x = 209,723,109.12/14,062.20
  6. Step 6: Final answer
    x = 14,913.96

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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.