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Finding the Fourth Proportional to 10,920.66, 15,059.43 and 8,924.82

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Solution

The fourth proportional to 10,920.66, 15,059.43 and 8,924.82 is: 12,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.66 : 15,059.43 = 8,924.82 : x
  2. Step 2: Convert to fraction form
    10,920.66/15,059.43 = 8,924.82/x
  3. Step 3: Cross multiply
    10,920.66x = 15,059.43 × 8,924.82
  4. Step 4: Simplify right side
    10,920.66x = 134,402,702.05
  5. Step 5: Solve for x
    x = 134,402,702.05/10,920.66
  6. Step 6: Final answer
    x = 12,307.20

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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.