Home / 13,720.38-18,934.26-7,432.89

Finding the Fourth Proportional to 13,720.38, 18,934.26 and 7,432.89

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Solution

The fourth proportional to 13,720.38, 18,934.26 and 7,432.89 is: 10,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.38 : 18,934.26 = 7,432.89 : x
  2. Step 2: Convert to fraction form
    13,720.38/18,934.26 = 7,432.89/x
  3. Step 3: Cross multiply
    13,720.38x = 18,934.26 × 7,432.89
  4. Step 4: Simplify right side
    13,720.38x = 140,736,271.81
  5. Step 5: Solve for x
    x = 140,736,271.81/13,720.38
  6. Step 6: Final answer
    x = 10,257.46

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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.