Home / 28,621.89-39,496.23-15,873.87

Finding the Fourth Proportional to 28,621.89, 39,496.23 and 15,873.87

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Solution

The fourth proportional to 28,621.89, 39,496.23 and 15,873.87 is: 21,904.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.89 : 39,496.23 = 15,873.87 : x
  2. Step 2: Convert to fraction form
    28,621.89/39,496.23 = 15,873.87/x
  3. Step 3: Cross multiply
    28,621.89x = 39,496.23 × 15,873.87
  4. Step 4: Simplify right side
    28,621.89x = 626,958,080.04
  5. Step 5: Solve for x
    x = 626,958,080.04/28,621.89
  6. Step 6: Final answer
    x = 21,904.84

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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.