Home / 15,372.14-21,215.60-9,000.68

Finding the Fourth Proportional to 15,372.14, 21,215.60 and 9,000.68

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Solution

The fourth proportional to 15,372.14, 21,215.60 and 9,000.68 is: 12,422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.14 : 21,215.60 = 9,000.68 : x
  2. Step 2: Convert to fraction form
    15,372.14/21,215.60 = 9,000.68/x
  3. Step 3: Cross multiply
    15,372.14x = 21,215.60 × 9,000.68
  4. Step 4: Simplify right side
    15,372.14x = 190,954,826.61
  5. Step 5: Solve for x
    x = 190,954,826.61/15,372.14
  6. Step 6: Final answer
    x = 12,422.14

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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.