Home / 31,809.77-43,894.12-18,385.29

Finding the Fourth Proportional to 31,809.77, 43,894.12 and 18,385.29

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Solution

The fourth proportional to 31,809.77, 43,894.12 and 18,385.29 is: 25,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.77 : 43,894.12 = 18,385.29 : x
  2. Step 2: Convert to fraction form
    31,809.77/43,894.12 = 18,385.29/x
  3. Step 3: Cross multiply
    31,809.77x = 43,894.12 × 18,385.29
  4. Step 4: Simplify right side
    31,809.77x = 807,005,878.57
  5. Step 5: Solve for x
    x = 807,005,878.57/31,809.77
  6. Step 6: Final answer
    x = 25,369.75

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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.