Home / 28,374.64-39,158.40-15,799.12

Finding the Fourth Proportional to 28,374.64, 39,158.40 and 15,799.12

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Solution

The fourth proportional to 28,374.64, 39,158.40 and 15,799.12 is: 21,803.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.64 : 39,158.40 = 15,799.12 : x
  2. Step 2: Convert to fraction form
    28,374.64/39,158.40 = 15,799.12/x
  3. Step 3: Cross multiply
    28,374.64x = 39,158.40 × 15,799.12
  4. Step 4: Simplify right side
    28,374.64x = 618,668,260.61
  5. Step 5: Solve for x
    x = 618,668,260.61/28,374.64
  6. Step 6: Final answer
    x = 21,803.56

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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.