Home / 18,748.80-28,113.48-9,378.72

Finding the Fourth Proportional to 18,748.80, 28,113.48 and 9,378.72

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Solution

The fourth proportional to 18,748.80, 28,113.48 and 9,378.72 is: 14,063.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.80 : 28,113.48 = 9,378.72 : x
  2. Step 2: Convert to fraction form
    18,748.80/28,113.48 = 9,378.72/x
  3. Step 3: Cross multiply
    18,748.80x = 28,113.48 × 9,378.72
  4. Step 4: Simplify right side
    18,748.80x = 263,668,457.15
  5. Step 5: Solve for x
    x = 263,668,457.15/18,748.80
  6. Step 6: Final answer
    x = 14,063.22

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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.