Home / 12,018.18-16,580.68-7,540.30

Finding the Fourth Proportional to 12,018.18, 16,580.68 and 7,540.30

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Solution

The fourth proportional to 12,018.18, 16,580.68 and 7,540.30 is: 10,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.18 : 16,580.68 = 7,540.30 : x
  2. Step 2: Convert to fraction form
    12,018.18/16,580.68 = 7,540.30/x
  3. Step 3: Cross multiply
    12,018.18x = 16,580.68 × 7,540.30
  4. Step 4: Simplify right side
    12,018.18x = 125,023,303.28
  5. Step 5: Solve for x
    x = 125,023,303.28/12,018.18
  6. Step 6: Final answer
    x = 10,402.85

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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.