Home / 13,440.65-18,548.10-7,472.16

Finding the Fourth Proportional to 13,440.65, 18,548.10 and 7,472.16

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Solution

The fourth proportional to 13,440.65, 18,548.10 and 7,472.16 is: 10,311.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.65 : 18,548.10 = 7,472.16 : x
  2. Step 2: Convert to fraction form
    13,440.65/18,548.10 = 7,472.16/x
  3. Step 3: Cross multiply
    13,440.65x = 18,548.10 × 7,472.16
  4. Step 4: Simplify right side
    13,440.65x = 138,594,370.90
  5. Step 5: Solve for x
    x = 138,594,370.90/13,440.65
  6. Step 6: Final answer
    x = 10,311.59

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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.