Home / 15,344.28-21,131.22-13,818.84

Finding the Fourth Proportional to 15,344.28, 21,131.22 and 13,818.84

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Solution

The fourth proportional to 15,344.28, 21,131.22 and 13,818.84 is: 19,030.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.28 : 21,131.22 = 13,818.84 : x
  2. Step 2: Convert to fraction form
    15,344.28/21,131.22 = 13,818.84/x
  3. Step 3: Cross multiply
    15,344.28x = 21,131.22 × 13,818.84
  4. Step 4: Simplify right side
    15,344.28x = 292,008,948.18
  5. Step 5: Solve for x
    x = 292,008,948.18/15,344.28
  6. Step 6: Final answer
    x = 19,030.48

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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.