Home / 21,945.78-32,908.95-15,763.86

Finding the Fourth Proportional to 21,945.78, 32,908.95 and 15,763.86

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Solution

The fourth proportional to 21,945.78, 32,908.95 and 15,763.86 is: 23,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,945.78 : 32,908.95 = 15,763.86 : x
  2. Step 2: Convert to fraction form
    21,945.78/32,908.95 = 15,763.86/x
  3. Step 3: Cross multiply
    21,945.78x = 32,908.95 × 15,763.86
  4. Step 4: Simplify right side
    21,945.78x = 518,772,080.55
  5. Step 5: Solve for x
    x = 518,772,080.55/21,945.78
  6. Step 6: Final answer
    x = 23,638.81

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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.