Home / 15,209.32-20,989.30-8,494.76

Finding the Fourth Proportional to 15,209.32, 20,989.30 and 8,494.76

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Solution

The fourth proportional to 15,209.32, 20,989.30 and 8,494.76 is: 11,723.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.32 : 20,989.30 = 8,494.76 : x
  2. Step 2: Convert to fraction form
    15,209.32/20,989.30 = 8,494.76/x
  3. Step 3: Cross multiply
    15,209.32x = 20,989.30 × 8,494.76
  4. Step 4: Simplify right side
    15,209.32x = 178,299,066.07
  5. Step 5: Solve for x
    x = 178,299,066.07/15,209.32
  6. Step 6: Final answer
    x = 11,723.01

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Half scale
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Double scale
Find fourth proportional to 15,210.32, 20,990.68 and 8,495.76
Similar ratio
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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.