Home / 39,161.85-54,041.90-21,256.47

Finding the Fourth Proportional to 39,161.85, 54,041.90 and 21,256.47

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Solution

The fourth proportional to 39,161.85, 54,041.90 and 21,256.47 is: 29,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,161.85 : 54,041.90 = 21,256.47 : x
  2. Step 2: Convert to fraction form
    39,161.85/54,041.90 = 21,256.47/x
  3. Step 3: Cross multiply
    39,161.85x = 54,041.90 × 21,256.47
  4. Step 4: Simplify right side
    39,161.85x = 1,148,740,026.09
  5. Step 5: Solve for x
    x = 1,148,740,026.09/39,161.85
  6. Step 6: Final answer
    x = 29,333.14

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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.