Home / 39,647.79-54,715.52-21,743.44

Finding the Fourth Proportional to 39,647.79, 54,715.52 and 21,743.44

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Solution

The fourth proportional to 39,647.79, 54,715.52 and 21,743.44 is: 30,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,647.79 : 54,715.52 = 21,743.44 : x
  2. Step 2: Convert to fraction form
    39,647.79/54,715.52 = 21,743.44/x
  3. Step 3: Cross multiply
    39,647.79x = 54,715.52 × 21,743.44
  4. Step 4: Simplify right side
    39,647.79x = 1,189,703,543.76
  5. Step 5: Solve for x
    x = 1,189,703,543.76/39,647.79
  6. Step 6: Final answer
    x = 30,006.81

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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.