Home / 12,240.91-18,348.55-5,129.22

Finding the Fourth Proportional to 12,240.91, 18,348.55 and 5,129.22

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Solution

The fourth proportional to 12,240.91, 18,348.55 and 5,129.22 is: 7,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.91 : 18,348.55 = 5,129.22 : x
  2. Step 2: Convert to fraction form
    12,240.91/18,348.55 = 5,129.22/x
  3. Step 3: Cross multiply
    12,240.91x = 18,348.55 × 5,129.22
  4. Step 4: Simplify right side
    12,240.91x = 94,113,749.63
  5. Step 5: Solve for x
    x = 94,113,749.63/12,240.91
  6. Step 6: Final answer
    x = 7,688.46

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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.