Home / 13,998.80-19,317.88-7,711.16

Finding the Fourth Proportional to 13,998.80, 19,317.88 and 7,711.16

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Solution

The fourth proportional to 13,998.80, 19,317.88 and 7,711.16 is: 10,641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.80 : 19,317.88 = 7,711.16 : x
  2. Step 2: Convert to fraction form
    13,998.80/19,317.88 = 7,711.16/x
  3. Step 3: Cross multiply
    13,998.80x = 19,317.88 × 7,711.16
  4. Step 4: Simplify right side
    13,998.80x = 148,963,263.54
  5. Step 5: Solve for x
    x = 148,963,263.54/13,998.80
  6. Step 6: Final answer
    x = 10,641.15

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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.