Home / 31,482.54-43,432.20-18,900

Finding the Fourth Proportional to 31,482.54, 43,432.20 and 18,900

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Solution

The fourth proportional to 31,482.54, 43,432.20 and 18,900 is: 26,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,482.54 : 43,432.20 = 18,900 : x
  2. Step 2: Convert to fraction form
    31,482.54/43,432.20 = 18,900/x
  3. Step 3: Cross multiply
    31,482.54x = 43,432.20 × 18,900
  4. Step 4: Simplify right side
    31,482.54x = 820,868,580
  5. Step 5: Solve for x
    x = 820,868,580/31,482.54
  6. Step 6: Final answer
    x = 26,073.77

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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.