Home / 15,242.78-21,023.73-10,761.86

Finding the Fourth Proportional to 15,242.78, 21,023.73 and 10,761.86

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Solution

The fourth proportional to 15,242.78, 21,023.73 and 10,761.86 is: 14,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,242.78 : 21,023.73 = 10,761.86 : x
  2. Step 2: Convert to fraction form
    15,242.78/21,023.73 = 10,761.86/x
  3. Step 3: Cross multiply
    15,242.78x = 21,023.73 × 10,761.86
  4. Step 4: Simplify right side
    15,242.78x = 226,254,438.94
  5. Step 5: Solve for x
    x = 226,254,438.94/15,242.78
  6. Step 6: Final answer
    x = 14,843.38

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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.