Home / 39,168.40-54,050.80-21,262.72

Finding the Fourth Proportional to 39,168.40, 54,050.80 and 21,262.72

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Solution

The fourth proportional to 39,168.40, 54,050.80 and 21,262.72 is: 29,341.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,168.40 : 54,050.80 = 21,262.72 : x
  2. Step 2: Convert to fraction form
    39,168.40/54,050.80 = 21,262.72/x
  3. Step 3: Cross multiply
    39,168.40x = 54,050.80 × 21,262.72
  4. Step 4: Simplify right side
    39,168.40x = 1,149,267,026.18
  5. Step 5: Solve for x
    x = 1,149,267,026.18/39,168.40
  6. Step 6: Final answer
    x = 29,341.69

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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.