Home / 13,561.23-20,341.86-8,885.13

Finding the Fourth Proportional to 13,561.23, 20,341.86 and 8,885.13

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Solution

The fourth proportional to 13,561.23, 20,341.86 and 8,885.13 is: 13,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.23 : 20,341.86 = 8,885.13 : x
  2. Step 2: Convert to fraction form
    13,561.23/20,341.86 = 8,885.13/x
  3. Step 3: Cross multiply
    13,561.23x = 20,341.86 × 8,885.13
  4. Step 4: Simplify right side
    13,561.23x = 180,740,070.54
  5. Step 5: Solve for x
    x = 180,740,070.54/13,561.23
  6. Step 6: Final answer
    x = 13,327.70

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Double scale
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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.