Home / 12,988.22-19,479.51-4,104.25

Finding the Fourth Proportional to 12,988.22, 19,479.51 and 4,104.25

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Solution

The fourth proportional to 12,988.22, 19,479.51 and 4,104.25 is: 6,155.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.22 : 19,479.51 = 4,104.25 : x
  2. Step 2: Convert to fraction form
    12,988.22/19,479.51 = 4,104.25/x
  3. Step 3: Cross multiply
    12,988.22x = 19,479.51 × 4,104.25
  4. Step 4: Simplify right side
    12,988.22x = 79,948,730.22
  5. Step 5: Solve for x
    x = 79,948,730.22/12,988.22
  6. Step 6: Final answer
    x = 6,155.48

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1.5x scale

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.