Home / 30,579.18-42,195.51-18,001.50

Finding the Fourth Proportional to 30,579.18, 42,195.51 and 18,001.50

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Solution

The fourth proportional to 30,579.18, 42,195.51 and 18,001.50 is: 24,839.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.18 : 42,195.51 = 18,001.50 : x
  2. Step 2: Convert to fraction form
    30,579.18/42,195.51 = 18,001.50/x
  3. Step 3: Cross multiply
    30,579.18x = 42,195.51 × 18,001.50
  4. Step 4: Simplify right side
    30,579.18x = 759,582,473.27
  5. Step 5: Solve for x
    x = 759,582,473.27/30,579.18
  6. Step 6: Final answer
    x = 24,839.86

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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.