Home / 15,505.44-21,361.34-10,781.52

Finding the Fourth Proportional to 15,505.44, 21,361.34 and 10,781.52

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Solution

The fourth proportional to 15,505.44, 21,361.34 and 10,781.52 is: 14,853.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.44 : 21,361.34 = 10,781.52 : x
  2. Step 2: Convert to fraction form
    15,505.44/21,361.34 = 10,781.52/x
  3. Step 3: Cross multiply
    15,505.44x = 21,361.34 × 10,781.52
  4. Step 4: Simplify right side
    15,505.44x = 230,307,714.44
  5. Step 5: Solve for x
    x = 230,307,714.44/15,505.44
  6. Step 6: Final answer
    x = 14,853.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.