Home / 25,018.47-34,525.51-13,687.79

Finding the Fourth Proportional to 25,018.47, 34,525.51 and 13,687.79

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Solution

The fourth proportional to 25,018.47, 34,525.51 and 13,687.79 is: 18,889.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,018.47 : 34,525.51 = 13,687.79 : x
  2. Step 2: Convert to fraction form
    25,018.47/34,525.51 = 13,687.79/x
  3. Step 3: Cross multiply
    25,018.47x = 34,525.51 × 13,687.79
  4. Step 4: Simplify right side
    25,018.47x = 472,577,723.68
  5. Step 5: Solve for x
    x = 472,577,723.68/25,018.47
  6. Step 6: Final answer
    x = 18,889.15

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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.