Home / 28,621.59-39,496.41-15,873.78

Finding the Fourth Proportional to 28,621.59, 39,496.41 and 15,873.78

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Solution

The fourth proportional to 28,621.59, 39,496.41 and 15,873.78 is: 21,905.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.59 : 39,496.41 = 15,873.78 : x
  2. Step 2: Convert to fraction form
    28,621.59/39,496.41 = 15,873.78/x
  3. Step 3: Cross multiply
    28,621.59x = 39,496.41 × 15,873.78
  4. Step 4: Simplify right side
    28,621.59x = 626,957,323.13
  5. Step 5: Solve for x
    x = 626,957,323.13/28,621.59
  6. Step 6: Final answer
    x = 21,905.05

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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.