Home / 39,657.99-54,728.10-21,753.14

Finding the Fourth Proportional to 39,657.99, 54,728.10 and 21,753.14

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Solution

The fourth proportional to 39,657.99, 54,728.10 and 21,753.14 is: 30,019.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.99 : 54,728.10 = 21,753.14 : x
  2. Step 2: Convert to fraction form
    39,657.99/54,728.10 = 21,753.14/x
  3. Step 3: Cross multiply
    39,657.99x = 54,728.10 × 21,753.14
  4. Step 4: Simplify right side
    39,657.99x = 1,190,508,021.23
  5. Step 5: Solve for x
    x = 1,190,508,021.23/39,657.99
  6. Step 6: Final answer
    x = 30,019.37

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1.5x scale

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.