Home / 22,756.75-31,405.38-12,685.26

Finding the Fourth Proportional to 22,756.75, 31,405.38 and 12,685.26

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Solution

The fourth proportional to 22,756.75, 31,405.38 and 12,685.26 is: 17,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,756.75 : 31,405.38 = 12,685.26 : x
  2. Step 2: Convert to fraction form
    22,756.75/31,405.38 = 12,685.26/x
  3. Step 3: Cross multiply
    22,756.75x = 31,405.38 × 12,685.26
  4. Step 4: Simplify right side
    22,756.75x = 398,385,347.27
  5. Step 5: Solve for x
    x = 398,385,347.27/22,756.75
  6. Step 6: Final answer
    x = 17,506.25

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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.