Home / 13,351.74-20,026.40-3,490.80

Finding the Fourth Proportional to 13,351.74, 20,026.40 and 3,490.80

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Solution

The fourth proportional to 13,351.74, 20,026.40 and 3,490.80 is: 5,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.74 : 20,026.40 = 3,490.80 : x
  2. Step 2: Convert to fraction form
    13,351.74/20,026.40 = 3,490.80/x
  3. Step 3: Cross multiply
    13,351.74x = 20,026.40 × 3,490.80
  4. Step 4: Simplify right side
    13,351.74x = 69,908,139.67
  5. Step 5: Solve for x
    x = 69,908,139.67/13,351.74
  6. Step 6: Final answer
    x = 5,235.88

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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.