Home / 23,720.30-35,406.76-20,917.88

Finding the Fourth Proportional to 23,720.30, 35,406.76 and 20,917.88

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Solution

The fourth proportional to 23,720.30, 35,406.76 and 20,917.88 is: 31,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,720.30 : 35,406.76 = 20,917.88 : x
  2. Step 2: Convert to fraction form
    23,720.30/35,406.76 = 20,917.88/x
  3. Step 3: Cross multiply
    23,720.30x = 35,406.76 × 20,917.88
  4. Step 4: Simplify right side
    23,720.30x = 740,634,356.87
  5. Step 5: Solve for x
    x = 740,634,356.87/23,720.30
  6. Step 6: Final answer
    x = 31,223.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.