Home / 20,307.93-30,448.85-8,469.87

Finding the Fourth Proportional to 20,307.93, 30,448.85 and 8,469.87

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Solution

The fourth proportional to 20,307.93, 30,448.85 and 8,469.87 is: 12,699.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.93 : 30,448.85 = 8,469.87 : x
  2. Step 2: Convert to fraction form
    20,307.93/30,448.85 = 8,469.87/x
  3. Step 3: Cross multiply
    20,307.93x = 30,448.85 × 8,469.87
  4. Step 4: Simplify right side
    20,307.93x = 257,897,758.80
  5. Step 5: Solve for x
    x = 257,897,758.80/20,307.93
  6. Step 6: Final answer
    x = 12,699.36

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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.