Home / 30,898.89-42,660.95-18,327.69

Finding the Fourth Proportional to 30,898.89, 42,660.95 and 18,327.69

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Solution

The fourth proportional to 30,898.89, 42,660.95 and 18,327.69 is: 25,304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.89 : 42,660.95 = 18,327.69 : x
  2. Step 2: Convert to fraction form
    30,898.89/42,660.95 = 18,327.69/x
  3. Step 3: Cross multiply
    30,898.89x = 42,660.95 × 18,327.69
  4. Step 4: Simplify right side
    30,898.89x = 781,876,575.07
  5. Step 5: Solve for x
    x = 781,876,575.07/30,898.89
  6. Step 6: Final answer
    x = 25,304.36

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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.