Home / 39,398.72-54,390.30-30,426.08

Finding the Fourth Proportional to 39,398.72, 54,390.30 and 30,426.08

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Solution

The fourth proportional to 39,398.72, 54,390.30 and 30,426.08 is: 42,003.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,398.72 : 54,390.30 = 30,426.08 : x
  2. Step 2: Convert to fraction form
    39,398.72/54,390.30 = 30,426.08/x
  3. Step 3: Cross multiply
    39,398.72x = 54,390.30 × 30,426.08
  4. Step 4: Simplify right side
    39,398.72x = 1,654,883,619.02
  5. Step 5: Solve for x
    x = 1,654,883,619.02/39,398.72
  6. Step 6: Final answer
    x = 42,003.49

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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.