Home / 25,687.10-35,438.43-18,988.81

Finding the Fourth Proportional to 25,687.10, 35,438.43 and 18,988.81

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Solution

The fourth proportional to 25,687.10, 35,438.43 and 18,988.81 is: 26,197.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,687.10 : 35,438.43 = 18,988.81 : x
  2. Step 2: Convert to fraction form
    25,687.10/35,438.43 = 18,988.81/x
  3. Step 3: Cross multiply
    25,687.10x = 35,438.43 × 18,988.81
  4. Step 4: Simplify right side
    25,687.10x = 672,933,613.97
  5. Step 5: Solve for x
    x = 672,933,613.97/25,687.10
  6. Step 6: Final answer
    x = 26,197.34

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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.