Home / 39,666.69-54,739.53-21,761.91

Finding the Fourth Proportional to 39,666.69, 54,739.53 and 21,761.91

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Solution

The fourth proportional to 39,666.69, 54,739.53 and 21,761.91 is: 30,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,666.69 : 54,739.53 = 21,761.91 : x
  2. Step 2: Convert to fraction form
    39,666.69/54,739.53 = 21,761.91/x
  3. Step 3: Cross multiply
    39,666.69x = 54,739.53 × 21,761.91
  4. Step 4: Simplify right side
    39,666.69x = 1,191,236,725.30
  5. Step 5: Solve for x
    x = 1,191,236,725.30/39,666.69
  6. Step 6: Final answer
    x = 30,031.16

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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.