Home / 43,870.29-65,805.95-12,278.48

Finding the Fourth Proportional to 43,870.29, 65,805.95 and 12,278.48

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Solution

The fourth proportional to 43,870.29, 65,805.95 and 12,278.48 is: 18,417.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,870.29 : 65,805.95 = 12,278.48 : x
  2. Step 2: Convert to fraction form
    43,870.29/65,805.95 = 12,278.48/x
  3. Step 3: Cross multiply
    43,870.29x = 65,805.95 × 12,278.48
  4. Step 4: Simplify right side
    43,870.29x = 807,996,650.53
  5. Step 5: Solve for x
    x = 807,996,650.53/43,870.29
  6. Step 6: Final answer
    x = 18,417.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.