Home / 31,565.19-43,748.08-30,974.70

Finding the Fourth Proportional to 31,565.19, 43,748.08 and 30,974.70

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Solution

The fourth proportional to 31,565.19, 43,748.08 and 30,974.70 is: 42,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,565.19 : 43,748.08 = 30,974.70 : x
  2. Step 2: Convert to fraction form
    31,565.19/43,748.08 = 30,974.70/x
  3. Step 3: Cross multiply
    31,565.19x = 43,748.08 × 30,974.70
  4. Step 4: Simplify right side
    31,565.19x = 1,355,083,653.58
  5. Step 5: Solve for x
    x = 1,355,083,653.58/31,565.19
  6. Step 6: Final answer
    x = 42,929.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.