Home / 25,731.54-35,510.40-15,120.99

Finding the Fourth Proportional to 25,731.54, 35,510.40 and 15,120.99

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Solution

The fourth proportional to 25,731.54, 35,510.40 and 15,120.99 is: 20,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,731.54 : 35,510.40 = 15,120.99 : x
  2. Step 2: Convert to fraction form
    25,731.54/35,510.40 = 15,120.99/x
  3. Step 3: Cross multiply
    25,731.54x = 35,510.40 × 15,120.99
  4. Step 4: Simplify right side
    25,731.54x = 536,952,403.30
  5. Step 5: Solve for x
    x = 536,952,403.30/25,731.54
  6. Step 6: Final answer
    x = 20,867.48

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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.