Home / 12,408.16-18,587.44-7,475.20

Finding the Fourth Proportional to 12,408.16, 18,587.44 and 7,475.20

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Solution

The fourth proportional to 12,408.16, 18,587.44 and 7,475.20 is: 11,197.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.16 : 18,587.44 = 7,475.20 : x
  2. Step 2: Convert to fraction form
    12,408.16/18,587.44 = 7,475.20/x
  3. Step 3: Cross multiply
    12,408.16x = 18,587.44 × 7,475.20
  4. Step 4: Simplify right side
    12,408.16x = 138,944,831.49
  5. Step 5: Solve for x
    x = 138,944,831.49/12,408.16
  6. Step 6: Final answer
    x = 11,197.86

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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.