Home / 20,897.60-31,532.56-20,087.52

Finding the Fourth Proportional to 20,897.60, 31,532.56 and 20,087.52

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Solution

The fourth proportional to 20,897.60, 31,532.56 and 20,087.52 is: 30,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.60 : 31,532.56 = 20,087.52 : x
  2. Step 2: Convert to fraction form
    20,897.60/31,532.56 = 20,087.52/x
  3. Step 3: Cross multiply
    20,897.60x = 31,532.56 × 20,087.52
  4. Step 4: Simplify right side
    20,897.60x = 633,410,929.65
  5. Step 5: Solve for x
    x = 633,410,929.65/20,897.60
  6. Step 6: Final answer
    x = 30,310.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.