Home / 22,238.76-30,690.46-12,810.36

Finding the Fourth Proportional to 22,238.76, 30,690.46 and 12,810.36

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Solution

The fourth proportional to 22,238.76, 30,690.46 and 12,810.36 is: 17,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,238.76 : 30,690.46 = 12,810.36 : x
  2. Step 2: Convert to fraction form
    22,238.76/30,690.46 = 12,810.36/x
  3. Step 3: Cross multiply
    22,238.76x = 30,690.46 × 12,810.36
  4. Step 4: Simplify right side
    22,238.76x = 393,155,841.17
  5. Step 5: Solve for x
    x = 393,155,841.17/22,238.76
  6. Step 6: Final answer
    x = 17,678.86

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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.