Home / 13,399.90-18,491.88-7,432.48

Finding the Fourth Proportional to 13,399.90, 18,491.88 and 7,432.48

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Solution

The fourth proportional to 13,399.90, 18,491.88 and 7,432.48 is: 10,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.90 : 18,491.88 = 7,432.48 : x
  2. Step 2: Convert to fraction form
    13,399.90/18,491.88 = 7,432.48/x
  3. Step 3: Cross multiply
    13,399.90x = 18,491.88 × 7,432.48
  4. Step 4: Simplify right side
    13,399.90x = 137,440,528.26
  5. Step 5: Solve for x
    x = 137,440,528.26/13,399.90
  6. Step 6: Final answer
    x = 10,256.83

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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.