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Finding the Fourth Proportional to 10,366.76, 15,539.42 and 4,815.59

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Solution

The fourth proportional to 10,366.76, 15,539.42 and 4,815.59 is: 7,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,366.76 : 15,539.42 = 4,815.59 : x
  2. Step 2: Convert to fraction form
    10,366.76/15,539.42 = 4,815.59/x
  3. Step 3: Cross multiply
    10,366.76x = 15,539.42 × 4,815.59
  4. Step 4: Simplify right side
    10,366.76x = 74,831,373.78
  5. Step 5: Solve for x
    x = 74,831,373.78/10,366.76
  6. Step 6: Final answer
    x = 7,218.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.