Home / 15,138.44-20,901.34-9,475.48

Finding the Fourth Proportional to 15,138.44, 20,901.34 and 9,475.48

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Solution

The fourth proportional to 15,138.44, 20,901.34 and 9,475.48 is: 13,082.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.44 : 20,901.34 = 9,475.48 : x
  2. Step 2: Convert to fraction form
    15,138.44/20,901.34 = 9,475.48/x
  3. Step 3: Cross multiply
    15,138.44x = 20,901.34 × 9,475.48
  4. Step 4: Simplify right side
    15,138.44x = 198,050,267.11
  5. Step 5: Solve for x
    x = 198,050,267.11/15,138.44
  6. Step 6: Final answer
    x = 13,082.60

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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.