Home / 15,031.28-20,741.34-8,658.02

Finding the Fourth Proportional to 15,031.28, 20,741.34 and 8,658.02

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Solution

The fourth proportional to 15,031.28, 20,741.34 and 8,658.02 is: 11,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.28 : 20,741.34 = 8,658.02 : x
  2. Step 2: Convert to fraction form
    15,031.28/20,741.34 = 8,658.02/x
  3. Step 3: Cross multiply
    15,031.28x = 20,741.34 × 8,658.02
  4. Step 4: Simplify right side
    15,031.28x = 179,578,936.55
  5. Step 5: Solve for x
    x = 179,578,936.55/15,031.28
  6. Step 6: Final answer
    x = 11,947.02

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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.