Home / 15,869.60-21,902.75-9,154.02

Finding the Fourth Proportional to 15,869.60, 21,902.75 and 9,154.02

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Solution

The fourth proportional to 15,869.60, 21,902.75 and 9,154.02 is: 12,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.60 : 21,902.75 = 9,154.02 : x
  2. Step 2: Convert to fraction form
    15,869.60/21,902.75 = 9,154.02/x
  3. Step 3: Cross multiply
    15,869.60x = 21,902.75 × 9,154.02
  4. Step 4: Simplify right side
    15,869.60x = 200,498,211.56
  5. Step 5: Solve for x
    x = 200,498,211.56/15,869.60
  6. Step 6: Final answer
    x = 12,634.11

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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.