Home / 39,649.57-54,717.15-21,743.51

Finding the Fourth Proportional to 39,649.57, 54,717.15 and 21,743.51

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Solution

The fourth proportional to 39,649.57, 54,717.15 and 21,743.51 is: 30,006.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,649.57 : 54,717.15 = 21,743.51 : x
  2. Step 2: Convert to fraction form
    39,649.57/54,717.15 = 21,743.51/x
  3. Step 3: Cross multiply
    39,649.57x = 54,717.15 × 21,743.51
  4. Step 4: Simplify right side
    39,649.57x = 1,189,742,706.15
  5. Step 5: Solve for x
    x = 1,189,742,706.15/39,649.57
  6. Step 6: Final answer
    x = 30,006.45

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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.