Home / 14,287.51-19,715.16-8,318.62

Finding the Fourth Proportional to 14,287.51, 19,715.16 and 8,318.62

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Solution

The fourth proportional to 14,287.51, 19,715.16 and 8,318.62 is: 11,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.51 : 19,715.16 = 8,318.62 : x
  2. Step 2: Convert to fraction form
    14,287.51/19,715.16 = 8,318.62/x
  3. Step 3: Cross multiply
    14,287.51x = 19,715.16 × 8,318.62
  4. Step 4: Simplify right side
    14,287.51x = 164,002,924.28
  5. Step 5: Solve for x
    x = 164,002,924.28/14,287.51
  6. Step 6: Final answer
    x = 11,478.76

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Half scale
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Double scale
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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.