Home / 31,043.65-42,841.16-19,113.87

Finding the Fourth Proportional to 31,043.65, 42,841.16 and 19,113.87

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Solution

The fourth proportional to 31,043.65, 42,841.16 and 19,113.87 is: 26,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,043.65 : 42,841.16 = 19,113.87 : x
  2. Step 2: Convert to fraction form
    31,043.65/42,841.16 = 19,113.87/x
  3. Step 3: Cross multiply
    31,043.65x = 42,841.16 × 19,113.87
  4. Step 4: Simplify right side
    31,043.65x = 818,860,148.68
  5. Step 5: Solve for x
    x = 818,860,148.68/31,043.65
  6. Step 6: Final answer
    x = 26,377.70

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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.