Home / 19,309.32-28,919.03-18,777.29

Finding the Fourth Proportional to 19,309.32, 28,919.03 and 18,777.29

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Solution

The fourth proportional to 19,309.32, 28,919.03 and 18,777.29 is: 28,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309.32 : 28,919.03 = 18,777.29 : x
  2. Step 2: Convert to fraction form
    19,309.32/28,919.03 = 18,777.29/x
  3. Step 3: Cross multiply
    19,309.32x = 28,919.03 × 18,777.29
  4. Step 4: Simplify right side
    19,309.32x = 543,020,774.35
  5. Step 5: Solve for x
    x = 543,020,774.35/19,309.32
  6. Step 6: Final answer
    x = 28,122.21

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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.