Home / 14,288.42-19,717.98-8,000.78

Finding the Fourth Proportional to 14,288.42, 19,717.98 and 8,000.78

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Solution

The fourth proportional to 14,288.42, 19,717.98 and 8,000.78 is: 11,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.42 : 19,717.98 = 8,000.78 : x
  2. Step 2: Convert to fraction form
    14,288.42/19,717.98 = 8,000.78/x
  3. Step 3: Cross multiply
    14,288.42x = 19,717.98 × 8,000.78
  4. Step 4: Simplify right side
    14,288.42x = 157,759,220.02
  5. Step 5: Solve for x
    x = 157,759,220.02/14,288.42
  6. Step 6: Final answer
    x = 11,041.05

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Half scale
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Double scale
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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.