Home / 12,359.28-18,538.92-3,475.40

Finding the Fourth Proportional to 12,359.28, 18,538.92 and 3,475.40

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Solution

The fourth proportional to 12,359.28, 18,538.92 and 3,475.40 is: 5,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.28 : 18,538.92 = 3,475.40 : x
  2. Step 2: Convert to fraction form
    12,359.28/18,538.92 = 3,475.40/x
  3. Step 3: Cross multiply
    12,359.28x = 18,538.92 × 3,475.40
  4. Step 4: Simplify right side
    12,359.28x = 64,430,162.57
  5. Step 5: Solve for x
    x = 64,430,162.57/12,359.28
  6. Step 6: Final answer
    x = 5,213.10

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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.