Home / 26,011.47-38,987.40-12,691.41

Finding the Fourth Proportional to 26,011.47, 38,987.40 and 12,691.41

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Solution

The fourth proportional to 26,011.47, 38,987.40 and 12,691.41 is: 19,022.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,011.47 : 38,987.40 = 12,691.41 : x
  2. Step 2: Convert to fraction form
    26,011.47/38,987.40 = 12,691.41/x
  3. Step 3: Cross multiply
    26,011.47x = 38,987.40 × 12,691.41
  4. Step 4: Simplify right side
    26,011.47x = 494,805,078.23
  5. Step 5: Solve for x
    x = 494,805,078.23/26,011.47
  6. Step 6: Final answer
    x = 19,022.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.