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Finding the Fourth Proportional to 10,374.78, 15,576.75 and 9,904.56

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Solution

The fourth proportional to 10,374.78, 15,576.75 and 9,904.56 is: 14,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,374.78 : 15,576.75 = 9,904.56 : x
  2. Step 2: Convert to fraction form
    10,374.78/15,576.75 = 9,904.56/x
  3. Step 3: Cross multiply
    10,374.78x = 15,576.75 × 9,904.56
  4. Step 4: Simplify right side
    10,374.78x = 154,280,854.98
  5. Step 5: Solve for x
    x = 154,280,854.98/10,374.78
  6. Step 6: Final answer
    x = 14,870.76

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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.