Home / 12,255.88-18,386.70-3,490.92

Finding the Fourth Proportional to 12,255.88, 18,386.70 and 3,490.92

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Solution

The fourth proportional to 12,255.88, 18,386.70 and 3,490.92 is: 5,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.88 : 18,386.70 = 3,490.92 : x
  2. Step 2: Convert to fraction form
    12,255.88/18,386.70 = 3,490.92/x
  3. Step 3: Cross multiply
    12,255.88x = 18,386.70 × 3,490.92
  4. Step 4: Simplify right side
    12,255.88x = 64,186,498.76
  5. Step 5: Solve for x
    x = 64,186,498.76/12,255.88
  6. Step 6: Final answer
    x = 5,237.20

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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.