Home / 15,257.28-21,061.48-9,291.12

Finding the Fourth Proportional to 15,257.28, 21,061.48 and 9,291.12

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Solution

The fourth proportional to 15,257.28, 21,061.48 and 9,291.12 is: 12,825.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,257.28 : 21,061.48 = 9,291.12 : x
  2. Step 2: Convert to fraction form
    15,257.28/21,061.48 = 9,291.12/x
  3. Step 3: Cross multiply
    15,257.28x = 21,061.48 × 9,291.12
  4. Step 4: Simplify right side
    15,257.28x = 195,684,738.06
  5. Step 5: Solve for x
    x = 195,684,738.06/15,257.28
  6. Step 6: Final answer
    x = 12,825.66

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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.