Home / 13,328.20-19,987.69-7,414.08

Finding the Fourth Proportional to 13,328.20, 19,987.69 and 7,414.08

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Solution

The fourth proportional to 13,328.20, 19,987.69 and 7,414.08 is: 11,118.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.20 : 19,987.69 = 7,414.08 : x
  2. Step 2: Convert to fraction form
    13,328.20/19,987.69 = 7,414.08/x
  3. Step 3: Cross multiply
    13,328.20x = 19,987.69 × 7,414.08
  4. Step 4: Simplify right side
    13,328.20x = 148,190,253.09
  5. Step 5: Solve for x
    x = 148,190,253.09/13,328.20
  6. Step 6: Final answer
    x = 11,118.55

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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.