Home / 31,785.95-43,865.51-17,639.70

Finding the Fourth Proportional to 31,785.95, 43,865.51 and 17,639.70

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Solution

The fourth proportional to 31,785.95, 43,865.51 and 17,639.70 is: 24,343.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.95 : 43,865.51 = 17,639.70 : x
  2. Step 2: Convert to fraction form
    31,785.95/43,865.51 = 17,639.70/x
  3. Step 3: Cross multiply
    31,785.95x = 43,865.51 × 17,639.70
  4. Step 4: Simplify right side
    31,785.95x = 773,774,480.85
  5. Step 5: Solve for x
    x = 773,774,480.85/31,785.95
  6. Step 6: Final answer
    x = 24,343.29

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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.