Home / 25,871.42-35,706.43-15,805.68

Finding the Fourth Proportional to 25,871.42, 35,706.43 and 15,805.68

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Solution

The fourth proportional to 25,871.42, 35,706.43 and 15,805.68 is: 21,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,871.42 : 35,706.43 = 15,805.68 : x
  2. Step 2: Convert to fraction form
    25,871.42/35,706.43 = 15,805.68/x
  3. Step 3: Cross multiply
    25,871.42x = 35,706.43 × 15,805.68
  4. Step 4: Simplify right side
    25,871.42x = 564,364,148.96
  5. Step 5: Solve for x
    x = 564,364,148.96/25,871.42
  6. Step 6: Final answer
    x = 21,814.19

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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.