Home / 28,029.16-38,680.25-15,453.91

Finding the Fourth Proportional to 28,029.16, 38,680.25 and 15,453.91

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Solution

The fourth proportional to 28,029.16, 38,680.25 and 15,453.91 is: 21,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029.16 : 38,680.25 = 15,453.91 : x
  2. Step 2: Convert to fraction form
    28,029.16/38,680.25 = 15,453.91/x
  3. Step 3: Cross multiply
    28,029.16x = 38,680.25 × 15,453.91
  4. Step 4: Simplify right side
    28,029.16x = 597,761,203.88
  5. Step 5: Solve for x
    x = 597,761,203.88/28,029.16
  6. Step 6: Final answer
    x = 21,326.40

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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.