Home / 20,917.47-31,373.43-7,768.06

Finding the Fourth Proportional to 20,917.47, 31,373.43 and 7,768.06

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Solution

The fourth proportional to 20,917.47, 31,373.43 and 7,768.06 is: 11,651.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.47 : 31,373.43 = 7,768.06 : x
  2. Step 2: Convert to fraction form
    20,917.47/31,373.43 = 7,768.06/x
  3. Step 3: Cross multiply
    20,917.47x = 31,373.43 × 7,768.06
  4. Step 4: Simplify right side
    20,917.47x = 243,710,686.65
  5. Step 5: Solve for x
    x = 243,710,686.65/20,917.47
  6. Step 6: Final answer
    x = 11,651.06

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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.