Home / 12,408.59-17,124.51-7,104.21

Finding the Fourth Proportional to 12,408.59, 17,124.51 and 7,104.21

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Solution

The fourth proportional to 12,408.59, 17,124.51 and 7,104.21 is: 9,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.59 : 17,124.51 = 7,104.21 : x
  2. Step 2: Convert to fraction form
    12,408.59/17,124.51 = 7,104.21/x
  3. Step 3: Cross multiply
    12,408.59x = 17,124.51 × 7,104.21
  4. Step 4: Simplify right side
    12,408.59x = 121,656,077.61
  5. Step 5: Solve for x
    x = 121,656,077.61/12,408.59
  6. Step 6: Final answer
    x = 9,804.18

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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.