Home / 13,972.30-20,961.59-7,397.12

Finding the Fourth Proportional to 13,972.30, 20,961.59 and 7,397.12

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Solution

The fourth proportional to 13,972.30, 20,961.59 and 7,397.12 is: 11,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.30 : 20,961.59 = 7,397.12 : x
  2. Step 2: Convert to fraction form
    13,972.30/20,961.59 = 7,397.12/x
  3. Step 3: Cross multiply
    13,972.30x = 20,961.59 × 7,397.12
  4. Step 4: Simplify right side
    13,972.30x = 155,055,412.04
  5. Step 5: Solve for x
    x = 155,055,412.04/13,972.30
  6. Step 6: Final answer
    x = 11,097.35

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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.