Home / 28,374.25-39,157.68-15,799

Finding the Fourth Proportional to 28,374.25, 39,157.68 and 15,799

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Solution

The fourth proportional to 28,374.25, 39,157.68 and 15,799 is: 21,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.25 : 39,157.68 = 15,799 : x
  2. Step 2: Convert to fraction form
    28,374.25/39,157.68 = 15,799/x
  3. Step 3: Cross multiply
    28,374.25x = 39,157.68 × 15,799
  4. Step 4: Simplify right side
    28,374.25x = 618,652,186.32
  5. Step 5: Solve for x
    x = 618,652,186.32/28,374.25
  6. Step 6: Final answer
    x = 21,803.30

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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.