Home / 28,159.35-38,858.31-15,410.13

Finding the Fourth Proportional to 28,159.35, 38,858.31 and 15,410.13

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Solution

The fourth proportional to 28,159.35, 38,858.31 and 15,410.13 is: 21,265.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.35 : 38,858.31 = 15,410.13 : x
  2. Step 2: Convert to fraction form
    28,159.35/38,858.31 = 15,410.13/x
  3. Step 3: Cross multiply
    28,159.35x = 38,858.31 × 15,410.13
  4. Step 4: Simplify right side
    28,159.35x = 598,811,608.68
  5. Step 5: Solve for x
    x = 598,811,608.68/28,159.35
  6. Step 6: Final answer
    x = 21,265.11

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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.