Home / 30,008.40-41,398.47-18,679.74

Finding the Fourth Proportional to 30,008.40, 41,398.47 and 18,679.74

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Solution

The fourth proportional to 30,008.40, 41,398.47 and 18,679.74 is: 25,769.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.40 : 41,398.47 = 18,679.74 : x
  2. Step 2: Convert to fraction form
    30,008.40/41,398.47 = 18,679.74/x
  3. Step 3: Cross multiply
    30,008.40x = 41,398.47 × 18,679.74
  4. Step 4: Simplify right side
    30,008.40x = 773,312,656.00
  5. Step 5: Solve for x
    x = 773,312,656.00/30,008.40
  6. Step 6: Final answer
    x = 25,769.87

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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.