Home / 31,479.81-43,442.86-17,868.78

Finding the Fourth Proportional to 31,479.81, 43,442.86 and 17,868.78

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Solution

The fourth proportional to 31,479.81, 43,442.86 and 17,868.78 is: 24,659.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479.81 : 43,442.86 = 17,868.78 : x
  2. Step 2: Convert to fraction form
    31,479.81/43,442.86 = 17,868.78/x
  3. Step 3: Cross multiply
    31,479.81x = 43,442.86 × 17,868.78
  4. Step 4: Simplify right side
    31,479.81x = 776,270,724.30
  5. Step 5: Solve for x
    x = 776,270,724.30/31,479.81
  6. Step 6: Final answer
    x = 24,659.32

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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.