Home / 9,000.59-12,420.68-5,021.78

Finding the Fourth Proportional to 9,000.59, 12,420.68 and 5,021.78

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Solution

The fourth proportional to 9,000.59, 12,420.68 and 5,021.78 is: 6,929.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.59 : 12,420.68 = 5,021.78 : x
  2. Step 2: Convert to fraction form
    9,000.59/12,420.68 = 5,021.78/x
  3. Step 3: Cross multiply
    9,000.59x = 12,420.68 × 5,021.78
  4. Step 4: Simplify right side
    9,000.59x = 62,373,835.20
  5. Step 5: Solve for x
    x = 62,373,835.20/9,000.59
  6. Step 6: Final answer
    x = 6,929.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.