Home / 12,002.49-18,013.35-5,429.23

Finding the Fourth Proportional to 12,002.49, 18,013.35 and 5,429.23

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Solution

The fourth proportional to 12,002.49, 18,013.35 and 5,429.23 is: 8,148.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,002.49 : 18,013.35 = 5,429.23 : x
  2. Step 2: Convert to fraction form
    12,002.49/18,013.35 = 5,429.23/x
  3. Step 3: Cross multiply
    12,002.49x = 18,013.35 × 5,429.23
  4. Step 4: Simplify right side
    12,002.49x = 97,798,620.22
  5. Step 5: Solve for x
    x = 97,798,620.22/12,002.49
  6. Step 6: Final answer
    x = 8,148.19

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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.