Home / 28,507.39-39,345.60-18,799.75

Finding the Fourth Proportional to 28,507.39, 39,345.60 and 18,799.75

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Solution

The fourth proportional to 28,507.39, 39,345.60 and 18,799.75 is: 25,947.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.39 : 39,345.60 = 18,799.75 : x
  2. Step 2: Convert to fraction form
    28,507.39/39,345.60 = 18,799.75/x
  3. Step 3: Cross multiply
    28,507.39x = 39,345.60 × 18,799.75
  4. Step 4: Simplify right side
    28,507.39x = 739,687,443.60
  5. Step 5: Solve for x
    x = 739,687,443.60/28,507.39
  6. Step 6: Final answer
    x = 25,947.22

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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.