Home / 19,479.40-26,884.05-12,770.68

Finding the Fourth Proportional to 19,479.40, 26,884.05 and 12,770.68

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Solution

The fourth proportional to 19,479.40, 26,884.05 and 12,770.68 is: 17,625.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.40 : 26,884.05 = 12,770.68 : x
  2. Step 2: Convert to fraction form
    19,479.40/26,884.05 = 12,770.68/x
  3. Step 3: Cross multiply
    19,479.40x = 26,884.05 × 12,770.68
  4. Step 4: Simplify right side
    19,479.40x = 343,327,599.65
  5. Step 5: Solve for x
    x = 343,327,599.65/19,479.40
  6. Step 6: Final answer
    x = 17,625.16

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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.