Home / 21,187.76-29,373.07-20,064.29

Finding the Fourth Proportional to 21,187.76, 29,373.07 and 20,064.29

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Solution

The fourth proportional to 21,187.76, 29,373.07 and 20,064.29 is: 27,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.76 : 29,373.07 = 20,064.29 : x
  2. Step 2: Convert to fraction form
    21,187.76/29,373.07 = 20,064.29/x
  3. Step 3: Cross multiply
    21,187.76x = 29,373.07 × 20,064.29
  4. Step 4: Simplify right side
    21,187.76x = 589,349,794.67
  5. Step 5: Solve for x
    x = 589,349,794.67/21,187.76
  6. Step 6: Final answer
    x = 27,815.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.