Home / 18,740.72-28,120.19-8,868.24

Finding the Fourth Proportional to 18,740.72, 28,120.19 and 8,868.24

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Solution

The fourth proportional to 18,740.72, 28,120.19 and 8,868.24 is: 13,306.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.72 : 28,120.19 = 8,868.24 : x
  2. Step 2: Convert to fraction form
    18,740.72/28,120.19 = 8,868.24/x
  3. Step 3: Cross multiply
    18,740.72x = 28,120.19 × 8,868.24
  4. Step 4: Simplify right side
    18,740.72x = 249,376,549.42
  5. Step 5: Solve for x
    x = 249,376,549.42/18,740.72
  6. Step 6: Final answer
    x = 13,306.67

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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.