Home / 29,406.81-40,581.57-15,978.06

Finding the Fourth Proportional to 29,406.81, 40,581.57 and 15,978.06

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Solution

The fourth proportional to 29,406.81, 40,581.57 and 15,978.06 is: 22,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,406.81 : 40,581.57 = 15,978.06 : x
  2. Step 2: Convert to fraction form
    29,406.81/40,581.57 = 15,978.06/x
  3. Step 3: Cross multiply
    29,406.81x = 40,581.57 × 15,978.06
  4. Step 4: Simplify right side
    29,406.81x = 648,414,820.27
  5. Step 5: Solve for x
    x = 648,414,820.27/29,406.81
  6. Step 6: Final answer
    x = 22,049.82

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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.