Home / 12,184.72-18,280.80-5,161.12

Finding the Fourth Proportional to 12,184.72, 18,280.80 and 5,161.12

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Solution

The fourth proportional to 12,184.72, 18,280.80 and 5,161.12 is: 7,743.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.72 : 18,280.80 = 5,161.12 : x
  2. Step 2: Convert to fraction form
    12,184.72/18,280.80 = 5,161.12/x
  3. Step 3: Cross multiply
    12,184.72x = 18,280.80 × 5,161.12
  4. Step 4: Simplify right side
    12,184.72x = 94,349,402.50
  5. Step 5: Solve for x
    x = 94,349,402.50/12,184.72
  6. Step 6: Final answer
    x = 7,743.26

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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.