Home / 12,161.08-18,247.08-7,488.20

Finding the Fourth Proportional to 12,161.08, 18,247.08 and 7,488.20

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Solution

The fourth proportional to 12,161.08, 18,247.08 and 7,488.20 is: 11,235.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.08 : 18,247.08 = 7,488.20 : x
  2. Step 2: Convert to fraction form
    12,161.08/18,247.08 = 7,488.20/x
  3. Step 3: Cross multiply
    12,161.08x = 18,247.08 × 7,488.20
  4. Step 4: Simplify right side
    12,161.08x = 136,637,784.46
  5. Step 5: Solve for x
    x = 136,637,784.46/12,161.08
  6. Step 6: Final answer
    x = 11,235.66

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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.