Home / 28,478.88-39,301.46-15,903.62

Finding the Fourth Proportional to 28,478.88, 39,301.46 and 15,903.62

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Solution

The fourth proportional to 28,478.88, 39,301.46 and 15,903.62 is: 21,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.88 : 39,301.46 = 15,903.62 : x
  2. Step 2: Convert to fraction form
    28,478.88/39,301.46 = 15,903.62/x
  3. Step 3: Cross multiply
    28,478.88x = 39,301.46 × 15,903.62
  4. Step 4: Simplify right side
    28,478.88x = 625,035,485.29
  5. Step 5: Solve for x
    x = 625,035,485.29/28,478.88
  6. Step 6: Final answer
    x = 21,947.33

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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.