Home / 12,106.15-18,158.92-4,988.81

Finding the Fourth Proportional to 12,106.15, 18,158.92 and 4,988.81

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Solution

The fourth proportional to 12,106.15, 18,158.92 and 4,988.81 is: 7,483.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.15 : 18,158.92 = 4,988.81 : x
  2. Step 2: Convert to fraction form
    12,106.15/18,158.92 = 4,988.81/x
  3. Step 3: Cross multiply
    12,106.15x = 18,158.92 × 4,988.81
  4. Step 4: Simplify right side
    12,106.15x = 90,591,434.61
  5. Step 5: Solve for x
    x = 90,591,434.61/12,106.15
  6. Step 6: Final answer
    x = 7,483.09

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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.