Home / 15,211.20-22,802.40-11,877.60

Finding the Fourth Proportional to 15,211.20, 22,802.40 and 11,877.60

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Solution

The fourth proportional to 15,211.20, 22,802.40 and 11,877.60 is: 17,805.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.20 : 22,802.40 = 11,877.60 : x
  2. Step 2: Convert to fraction form
    15,211.20/22,802.40 = 11,877.60/x
  3. Step 3: Cross multiply
    15,211.20x = 22,802.40 × 11,877.60
  4. Step 4: Simplify right side
    15,211.20x = 270,837,786.24
  5. Step 5: Solve for x
    x = 270,837,786.24/15,211.20
  6. Step 6: Final answer
    x = 17,805.16

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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.