Home / 15,101.43-20,840.64-8,387.07

Finding the Fourth Proportional to 15,101.43, 20,840.64 and 8,387.07

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Solution

The fourth proportional to 15,101.43, 20,840.64 and 8,387.07 is: 11,574.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.43 : 20,840.64 = 8,387.07 : x
  2. Step 2: Convert to fraction form
    15,101.43/20,840.64 = 8,387.07/x
  3. Step 3: Cross multiply
    15,101.43x = 20,840.64 × 8,387.07
  4. Step 4: Simplify right side
    15,101.43x = 174,791,906.52
  5. Step 5: Solve for x
    x = 174,791,906.52/15,101.43
  6. Step 6: Final answer
    x = 11,574.53

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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.