Home / 15,496.46-21,384.41-8,781.69

Finding the Fourth Proportional to 15,496.46, 21,384.41 and 8,781.69

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Solution

The fourth proportional to 15,496.46, 21,384.41 and 8,781.69 is: 12,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.46 : 21,384.41 = 8,781.69 : x
  2. Step 2: Convert to fraction form
    15,496.46/21,384.41 = 8,781.69/x
  3. Step 3: Cross multiply
    15,496.46x = 21,384.41 × 8,781.69
  4. Step 4: Simplify right side
    15,496.46x = 187,791,215.54
  5. Step 5: Solve for x
    x = 187,791,215.54/15,496.46
  6. Step 6: Final answer
    x = 12,118.33

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Half scale
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Double scale
Find fourth proportional to 15,497.46, 21,385.78 and 8,782.69
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.