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Finding the Fourth Proportional to 10,537.76, 15,807.18 and 8,988.56

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Solution

The fourth proportional to 10,537.76, 15,807.18 and 8,988.56 is: 13,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,537.76 : 15,807.18 = 8,988.56 : x
  2. Step 2: Convert to fraction form
    10,537.76/15,807.18 = 8,988.56/x
  3. Step 3: Cross multiply
    10,537.76x = 15,807.18 × 8,988.56
  4. Step 4: Simplify right side
    10,537.76x = 142,083,785.86
  5. Step 5: Solve for x
    x = 142,083,785.86/10,537.76
  6. Step 6: Final answer
    x = 13,483.30

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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.