Home / 18,781.16-28,215.48-10,995.44

Finding the Fourth Proportional to 18,781.16, 28,215.48 and 10,995.44

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Solution

The fourth proportional to 18,781.16, 28,215.48 and 10,995.44 is: 16,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.16 : 28,215.48 = 10,995.44 : x
  2. Step 2: Convert to fraction form
    18,781.16/28,215.48 = 10,995.44/x
  3. Step 3: Cross multiply
    18,781.16x = 28,215.48 × 10,995.44
  4. Step 4: Simplify right side
    18,781.16x = 310,241,617.41
  5. Step 5: Solve for x
    x = 310,241,617.41/18,781.16
  6. Step 6: Final answer
    x = 16,518.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.