Home / 12,127.20-18,191.64-4,729.20

Finding the Fourth Proportional to 12,127.20, 18,191.64 and 4,729.20

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Solution

The fourth proportional to 12,127.20, 18,191.64 and 4,729.20 is: 7,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.20 : 18,191.64 = 4,729.20 : x
  2. Step 2: Convert to fraction form
    12,127.20/18,191.64 = 4,729.20/x
  3. Step 3: Cross multiply
    12,127.20x = 18,191.64 × 4,729.20
  4. Step 4: Simplify right side
    12,127.20x = 86,031,903.89
  5. Step 5: Solve for x
    x = 86,031,903.89/12,127.20
  6. Step 6: Final answer
    x = 7,094.13

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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.