Home / 18,738.30-28,109.55-6,259.18

Finding the Fourth Proportional to 18,738.30, 28,109.55 and 6,259.18

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Solution

The fourth proportional to 18,738.30, 28,109.55 and 6,259.18 is: 9,389.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.30 : 28,109.55 = 6,259.18 : x
  2. Step 2: Convert to fraction form
    18,738.30/28,109.55 = 6,259.18/x
  3. Step 3: Cross multiply
    18,738.30x = 28,109.55 × 6,259.18
  4. Step 4: Simplify right side
    18,738.30x = 175,942,733.17
  5. Step 5: Solve for x
    x = 175,942,733.17/18,738.30
  6. Step 6: Final answer
    x = 9,389.47

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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.