Home / 20,768.07-31,120.19-14,095.89

Finding the Fourth Proportional to 20,768.07, 31,120.19 and 14,095.89

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Solution

The fourth proportional to 20,768.07, 31,120.19 and 14,095.89 is: 21,122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.07 : 31,120.19 = 14,095.89 : x
  2. Step 2: Convert to fraction form
    20,768.07/31,120.19 = 14,095.89/x
  3. Step 3: Cross multiply
    20,768.07x = 31,120.19 × 14,095.89
  4. Step 4: Simplify right side
    20,768.07x = 438,666,619.42
  5. Step 5: Solve for x
    x = 438,666,619.42/20,768.07
  6. Step 6: Final answer
    x = 21,122.17

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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.