Home / 25,440.11-35,136.94-20,353.26

Finding the Fourth Proportional to 25,440.11, 35,136.94 and 20,353.26

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Solution

The fourth proportional to 25,440.11, 35,136.94 and 20,353.26 is: 28,111.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,440.11 : 35,136.94 = 20,353.26 : x
  2. Step 2: Convert to fraction form
    25,440.11/35,136.94 = 20,353.26/x
  3. Step 3: Cross multiply
    25,440.11x = 35,136.94 × 20,353.26
  4. Step 4: Simplify right side
    25,440.11x = 715,151,275.42
  5. Step 5: Solve for x
    x = 715,151,275.42/25,440.11
  6. Step 6: Final answer
    x = 28,111.18

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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.