Home / 23,129.10-34,709.85-9,990.90

Finding the Fourth Proportional to 23,129.10, 34,709.85 and 9,990.90

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Solution

The fourth proportional to 23,129.10, 34,709.85 and 9,990.90 is: 14,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.10 : 34,709.85 = 9,990.90 : x
  2. Step 2: Convert to fraction form
    23,129.10/34,709.85 = 9,990.90/x
  3. Step 3: Cross multiply
    23,129.10x = 34,709.85 × 9,990.90
  4. Step 4: Simplify right side
    23,129.10x = 346,782,640.37
  5. Step 5: Solve for x
    x = 346,782,640.37/23,129.10
  6. Step 6: Final answer
    x = 14,993.35

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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.