Home / 26,115.81-36,040.43-15,505.47

Finding the Fourth Proportional to 26,115.81, 36,040.43 and 15,505.47

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Solution

The fourth proportional to 26,115.81, 36,040.43 and 15,505.47 is: 21,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,115.81 : 36,040.43 = 15,505.47 : x
  2. Step 2: Convert to fraction form
    26,115.81/36,040.43 = 15,505.47/x
  3. Step 3: Cross multiply
    26,115.81x = 36,040.43 × 15,505.47
  4. Step 4: Simplify right side
    26,115.81x = 558,823,728.62
  5. Step 5: Solve for x
    x = 558,823,728.62/26,115.81
  6. Step 6: Final answer
    x = 21,397.91

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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.