Home / 28,500.12-39,330.05-15,924.87

Finding the Fourth Proportional to 28,500.12, 39,330.05 and 15,924.87

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Solution

The fourth proportional to 28,500.12, 39,330.05 and 15,924.87 is: 21,976.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.12 : 39,330.05 = 15,924.87 : x
  2. Step 2: Convert to fraction form
    28,500.12/39,330.05 = 15,924.87/x
  3. Step 3: Cross multiply
    28,500.12x = 39,330.05 × 15,924.87
  4. Step 4: Simplify right side
    28,500.12x = 626,325,853.72
  5. Step 5: Solve for x
    x = 626,325,853.72/28,500.12
  6. Step 6: Final answer
    x = 21,976.25

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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.