Home / 9,000.87-12,419.43-5,021.90

Finding the Fourth Proportional to 9,000.87, 12,419.43 and 5,021.90

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Solution

The fourth proportional to 9,000.87, 12,419.43 and 5,021.90 is: 6,929.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.87 : 12,419.43 = 5,021.90 : x
  2. Step 2: Convert to fraction form
    9,000.87/12,419.43 = 5,021.90/x
  3. Step 3: Cross multiply
    9,000.87x = 12,419.43 × 5,021.90
  4. Step 4: Simplify right side
    9,000.87x = 62,369,101.16
  5. Step 5: Solve for x
    x = 62,369,101.16/9,000.87
  6. Step 6: Final answer
    x = 6,929.23

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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.