Home / 39,712.35-54,803.91-21,808.50

Finding the Fourth Proportional to 39,712.35, 54,803.91 and 21,808.50

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Solution

The fourth proportional to 39,712.35, 54,803.91 and 21,808.50 is: 30,096.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712.35 : 54,803.91 = 21,808.50 : x
  2. Step 2: Convert to fraction form
    39,712.35/54,803.91 = 21,808.50/x
  3. Step 3: Cross multiply
    39,712.35x = 54,803.91 × 21,808.50
  4. Step 4: Simplify right side
    39,712.35x = 1,195,191,071.24
  5. Step 5: Solve for x
    x = 1,195,191,071.24/39,712.35
  6. Step 6: Final answer
    x = 30,096.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.