Home / 12,167.02-18,218.88-10,423.20

Finding the Fourth Proportional to 12,167.02, 18,218.88 and 10,423.20

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Solution

The fourth proportional to 12,167.02, 18,218.88 and 10,423.20 is: 15,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.02 : 18,218.88 = 10,423.20 : x
  2. Step 2: Convert to fraction form
    12,167.02/18,218.88 = 10,423.20/x
  3. Step 3: Cross multiply
    12,167.02x = 18,218.88 × 10,423.20
  4. Step 4: Simplify right side
    12,167.02x = 189,899,030.02
  5. Step 5: Solve for x
    x = 189,899,030.02/12,167.02
  6. Step 6: Final answer
    x = 15,607.69

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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.