Home / 10,538.76-15,808.68-8,989.56

Finding the Fourth Proportional to 10,538.76, 15,808.68 and 8,989.56

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Solution

The fourth proportional to 10,538.76, 15,808.68 and 8,989.56 is: 13,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,538.76 : 15,808.68 = 8,989.56 : x
  2. Step 2: Convert to fraction form
    10,538.76/15,808.68 = 8,989.56/x
  3. Step 3: Cross multiply
    10,538.76x = 15,808.68 × 8,989.56
  4. Step 4: Simplify right side
    10,538.76x = 142,113,077.38
  5. Step 5: Solve for x
    x = 142,113,077.38/10,538.76
  6. Step 6: Final answer
    x = 13,484.80

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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.