Home / 15,380.48-21,220.58-10,350.38

Finding the Fourth Proportional to 15,380.48, 21,220.58 and 10,350.38

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Solution

The fourth proportional to 15,380.48, 21,220.58 and 10,350.38 is: 14,280.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.48 : 21,220.58 = 10,350.38 : x
  2. Step 2: Convert to fraction form
    15,380.48/21,220.58 = 10,350.38/x
  3. Step 3: Cross multiply
    15,380.48x = 21,220.58 × 10,350.38
  4. Step 4: Simplify right side
    15,380.48x = 219,641,145.75
  5. Step 5: Solve for x
    x = 219,641,145.75/15,380.48
  6. Step 6: Final answer
    x = 14,280.51

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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.