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Finding the Fourth Proportional to 11,386.56, 15,712.56 and 6,350.88

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Solution

The fourth proportional to 11,386.56, 15,712.56 and 6,350.88 is: 8,763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.56 : 15,712.56 = 6,350.88 : x
  2. Step 2: Convert to fraction form
    11,386.56/15,712.56 = 6,350.88/x
  3. Step 3: Cross multiply
    11,386.56x = 15,712.56 × 6,350.88
  4. Step 4: Simplify right side
    11,386.56x = 99,788,583.05
  5. Step 5: Solve for x
    x = 99,788,583.05/11,386.56
  6. Step 6: Final answer
    x = 8,763.72

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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.