Home / 15,127.27-20,877.50-9,161.02

Finding the Fourth Proportional to 15,127.27, 20,877.50 and 9,161.02

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Solution

The fourth proportional to 15,127.27, 20,877.50 and 9,161.02 is: 12,643.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.27 : 20,877.50 = 9,161.02 : x
  2. Step 2: Convert to fraction form
    15,127.27/20,877.50 = 9,161.02/x
  3. Step 3: Cross multiply
    15,127.27x = 20,877.50 × 9,161.02
  4. Step 4: Simplify right side
    15,127.27x = 191,259,195.05
  5. Step 5: Solve for x
    x = 191,259,195.05/15,127.27
  6. Step 6: Final answer
    x = 12,643.34

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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.