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Finding the Fourth Proportional to 39,907.68, 55,073 and 22,003.40

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Solution

The fourth proportional to 39,907.68, 55,073 and 22,003.40 is: 30,364.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,907.68 : 55,073 = 22,003.40 : x
  2. Step 2: Convert to fraction form
    39,907.68/55,073 = 22,003.40/x
  3. Step 3: Cross multiply
    39,907.68x = 55,073 × 22,003.40
  4. Step 4: Simplify right side
    39,907.68x = 1,211,793,248.20
  5. Step 5: Solve for x
    x = 1,211,793,248.20/39,907.68
  6. Step 6: Final answer
    x = 30,364.91

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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.