Home / 15,141.65-20,880.98-11,550.23

Finding the Fourth Proportional to 15,141.65, 20,880.98 and 11,550.23

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Solution

The fourth proportional to 15,141.65, 20,880.98 and 11,550.23 is: 15,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.65 : 20,880.98 = 11,550.23 : x
  2. Step 2: Convert to fraction form
    15,141.65/20,880.98 = 11,550.23/x
  3. Step 3: Cross multiply
    15,141.65x = 20,880.98 × 11,550.23
  4. Step 4: Simplify right side
    15,141.65x = 241,179,959.47
  5. Step 5: Solve for x
    x = 241,179,959.47/15,141.65
  6. Step 6: Final answer
    x = 15,928.25

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Double scale
Find fourth proportional to 15,142.65, 20,882.35 and 11,551.23
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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.