Home / 30,855.67-42,582.38-18,109.41

Finding the Fourth Proportional to 30,855.67, 42,582.38 and 18,109.41

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Solution

The fourth proportional to 30,855.67, 42,582.38 and 18,109.41 is: 24,991.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.67 : 42,582.38 = 18,109.41 : x
  2. Step 2: Convert to fraction form
    30,855.67/42,582.38 = 18,109.41/x
  3. Step 3: Cross multiply
    30,855.67x = 42,582.38 × 18,109.41
  4. Step 4: Simplify right side
    30,855.67x = 771,141,581.19
  5. Step 5: Solve for x
    x = 771,141,581.19/30,855.67
  6. Step 6: Final answer
    x = 24,991.89

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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.