Home / 15,227.28-21,017.05-9,257.69

Finding the Fourth Proportional to 15,227.28, 21,017.05 and 9,257.69

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Solution

The fourth proportional to 15,227.28, 21,017.05 and 9,257.69 is: 12,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.28 : 21,017.05 = 9,257.69 : x
  2. Step 2: Convert to fraction form
    15,227.28/21,017.05 = 9,257.69/x
  3. Step 3: Cross multiply
    15,227.28x = 21,017.05 × 9,257.69
  4. Step 4: Simplify right side
    15,227.28x = 194,569,363.01
  5. Step 5: Solve for x
    x = 194,569,363.01/15,227.28
  6. Step 6: Final answer
    x = 12,777.68

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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.