Home / 20,783.46-31,170.33-10,248.60

Finding the Fourth Proportional to 20,783.46, 31,170.33 and 10,248.60

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Solution

The fourth proportional to 20,783.46, 31,170.33 and 10,248.60 is: 15,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.46 : 31,170.33 = 10,248.60 : x
  2. Step 2: Convert to fraction form
    20,783.46/31,170.33 = 10,248.60/x
  3. Step 3: Cross multiply
    20,783.46x = 31,170.33 × 10,248.60
  4. Step 4: Simplify right side
    20,783.46x = 319,452,244.04
  5. Step 5: Solve for x
    x = 319,452,244.04/20,783.46
  6. Step 6: Final answer
    x = 15,370.50

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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.