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Finding the Fourth Proportional to 11,459.95, 15,824.14 and 7,217.84

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Solution

The fourth proportional to 11,459.95, 15,824.14 and 7,217.84 is: 9,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.95 : 15,824.14 = 7,217.84 : x
  2. Step 2: Convert to fraction form
    11,459.95/15,824.14 = 7,217.84/x
  3. Step 3: Cross multiply
    11,459.95x = 15,824.14 × 7,217.84
  4. Step 4: Simplify right side
    11,459.95x = 114,216,132.17
  5. Step 5: Solve for x
    x = 114,216,132.17/11,459.95
  6. Step 6: Final answer
    x = 9,966.55

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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.