Home / 25,306.12-34,968.81-21,938.14

Finding the Fourth Proportional to 25,306.12, 34,968.81 and 21,938.14

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Solution

The fourth proportional to 25,306.12, 34,968.81 and 21,938.14 is: 30,314.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,306.12 : 34,968.81 = 21,938.14 : x
  2. Step 2: Convert to fraction form
    25,306.12/34,968.81 = 21,938.14/x
  3. Step 3: Cross multiply
    25,306.12x = 34,968.81 × 21,938.14
  4. Step 4: Simplify right side
    25,306.12x = 767,150,649.41
  5. Step 5: Solve for x
    x = 767,150,649.41/25,306.12
  6. Step 6: Final answer
    x = 30,314.83

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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.