Home / 20,788.89-31,182.89-6,748.89

Finding the Fourth Proportional to 20,788.89, 31,182.89 and 6,748.89

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Solution

The fourth proportional to 20,788.89, 31,182.89 and 6,748.89 is: 10,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.89 : 31,182.89 = 6,748.89 : x
  2. Step 2: Convert to fraction form
    20,788.89/31,182.89 = 6,748.89/x
  3. Step 3: Cross multiply
    20,788.89x = 31,182.89 × 6,748.89
  4. Step 4: Simplify right side
    20,788.89x = 210,449,931.87
  5. Step 5: Solve for x
    x = 210,449,931.87/20,788.89
  6. Step 6: Final answer
    x = 10,123.19

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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.