Home / 15,330.75-21,156.26-8,617.52

Finding the Fourth Proportional to 15,330.75, 21,156.26 and 8,617.52

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Solution

The fourth proportional to 15,330.75, 21,156.26 and 8,617.52 is: 11,892.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.75 : 21,156.26 = 8,617.52 : x
  2. Step 2: Convert to fraction form
    15,330.75/21,156.26 = 8,617.52/x
  3. Step 3: Cross multiply
    15,330.75x = 21,156.26 × 8,617.52
  4. Step 4: Simplify right side
    15,330.75x = 182,314,344.81
  5. Step 5: Solve for x
    x = 182,314,344.81/15,330.75
  6. Step 6: Final answer
    x = 11,892.07

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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.