Home / 13,909.12-20,862.77-6,515.24

Finding the Fourth Proportional to 13,909.12, 20,862.77 and 6,515.24

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Solution

The fourth proportional to 13,909.12, 20,862.77 and 6,515.24 is: 9,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.12 : 20,862.77 = 6,515.24 : x
  2. Step 2: Convert to fraction form
    13,909.12/20,862.77 = 6,515.24/x
  3. Step 3: Cross multiply
    13,909.12x = 20,862.77 × 6,515.24
  4. Step 4: Simplify right side
    13,909.12x = 135,925,816.72
  5. Step 5: Solve for x
    x = 135,925,816.72/13,909.12
  6. Step 6: Final answer
    x = 9,772.43

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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.