Home / 14,979.90-20,672.15-8,265.81

Finding the Fourth Proportional to 14,979.90, 20,672.15 and 8,265.81

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Solution

The fourth proportional to 14,979.90, 20,672.15 and 8,265.81 is: 11,406.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979.90 : 20,672.15 = 8,265.81 : x
  2. Step 2: Convert to fraction form
    14,979.90/20,672.15 = 8,265.81/x
  3. Step 3: Cross multiply
    14,979.90x = 20,672.15 × 8,265.81
  4. Step 4: Simplify right side
    14,979.90x = 170,872,064.19
  5. Step 5: Solve for x
    x = 170,872,064.19/14,979.90
  6. Step 6: Final answer
    x = 11,406.76

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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.