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Finding the Fourth Proportional to 11,580.46, 15,972.59 and 7,332.21

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Solution

The fourth proportional to 11,580.46, 15,972.59 and 7,332.21 is: 10,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,580.46 : 15,972.59 = 7,332.21 : x
  2. Step 2: Convert to fraction form
    11,580.46/15,972.59 = 7,332.21/x
  3. Step 3: Cross multiply
    11,580.46x = 15,972.59 × 7,332.21
  4. Step 4: Simplify right side
    11,580.46x = 117,114,402.45
  5. Step 5: Solve for x
    x = 117,114,402.45/11,580.46
  6. Step 6: Final answer
    x = 10,113.11

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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.