Home / 19,218.78-26,521.96-10,720.69

Finding the Fourth Proportional to 19,218.78, 26,521.96 and 10,720.69

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Solution

The fourth proportional to 19,218.78, 26,521.96 and 10,720.69 is: 14,794.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.78 : 26,521.96 = 10,720.69 : x
  2. Step 2: Convert to fraction form
    19,218.78/26,521.96 = 10,720.69/x
  3. Step 3: Cross multiply
    19,218.78x = 26,521.96 × 10,720.69
  4. Step 4: Simplify right side
    19,218.78x = 284,333,711.35
  5. Step 5: Solve for x
    x = 284,333,711.35/19,218.78
  6. Step 6: Final answer
    x = 14,794.58

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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.