Home / 25,405.25-35,047.74-15,330.47

Finding the Fourth Proportional to 25,405.25, 35,047.74 and 15,330.47

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Solution

The fourth proportional to 25,405.25, 35,047.74 and 15,330.47 is: 21,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,405.25 : 35,047.74 = 15,330.47 : x
  2. Step 2: Convert to fraction form
    25,405.25/35,047.74 = 15,330.47/x
  3. Step 3: Cross multiply
    25,405.25x = 35,047.74 × 15,330.47
  4. Step 4: Simplify right side
    25,405.25x = 537,298,122.65
  5. Step 5: Solve for x
    x = 537,298,122.65/25,405.25
  6. Step 6: Final answer
    x = 21,149.10

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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.