Home / 12,587.15-17,367.31-10,578.20

Finding the Fourth Proportional to 12,587.15, 17,367.31 and 10,578.20

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Solution

The fourth proportional to 12,587.15, 17,367.31 and 10,578.20 is: 14,595.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.15 : 17,367.31 = 10,578.20 : x
  2. Step 2: Convert to fraction form
    12,587.15/17,367.31 = 10,578.20/x
  3. Step 3: Cross multiply
    12,587.15x = 17,367.31 × 10,578.20
  4. Step 4: Simplify right side
    12,587.15x = 183,714,805.03
  5. Step 5: Solve for x
    x = 183,714,805.03/12,587.15
  6. Step 6: Final answer
    x = 14,595.43

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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.