Home / 21,182.88-29,244.33-14,478.24

Finding the Fourth Proportional to 21,182.88, 29,244.33 and 14,478.24

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Solution

The fourth proportional to 21,182.88, 29,244.33 and 14,478.24 is: 19,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.88 : 29,244.33 = 14,478.24 : x
  2. Step 2: Convert to fraction form
    21,182.88/29,244.33 = 14,478.24/x
  3. Step 3: Cross multiply
    21,182.88x = 29,244.33 × 14,478.24
  4. Step 4: Simplify right side
    21,182.88x = 423,406,428.38
  5. Step 5: Solve for x
    x = 423,406,428.38/21,182.88
  6. Step 6: Final answer
    x = 19,988.14

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Half scale
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Double scale
Find fourth proportional to 21,183.88, 29,245.71 and 14,479.24
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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.