Home / 22,756.49-31,405.02-12,685.01

Finding the Fourth Proportional to 22,756.49, 31,405.02 and 12,685.01

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Solution

The fourth proportional to 22,756.49, 31,405.02 and 12,685.01 is: 17,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,756.49 : 31,405.02 = 12,685.01 : x
  2. Step 2: Convert to fraction form
    22,756.49/31,405.02 = 12,685.01/x
  3. Step 3: Cross multiply
    22,756.49x = 31,405.02 × 12,685.01
  4. Step 4: Simplify right side
    22,756.49x = 398,372,992.75
  5. Step 5: Solve for x
    x = 398,372,992.75/22,756.49
  6. Step 6: Final answer
    x = 17,505.91

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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.