Home / 20,908.10-31,405.90-17,627.60

Finding the Fourth Proportional to 20,908.10, 31,405.90 and 17,627.60

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Solution

The fourth proportional to 20,908.10, 31,405.90 and 17,627.60 is: 26,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.10 : 31,405.90 = 17,627.60 : x
  2. Step 2: Convert to fraction form
    20,908.10/31,405.90 = 17,627.60/x
  3. Step 3: Cross multiply
    20,908.10x = 31,405.90 × 17,627.60
  4. Step 4: Simplify right side
    20,908.10x = 553,610,642.84
  5. Step 5: Solve for x
    x = 553,610,642.84/20,908.10
  6. Step 6: Final answer
    x = 26,478.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.