Home / 28,266.60-42,404.70-15,115.40

Finding the Fourth Proportional to 28,266.60, 42,404.70 and 15,115.40

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Solution

The fourth proportional to 28,266.60, 42,404.70 and 15,115.40 is: 22,675.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.60 : 42,404.70 = 15,115.40 : x
  2. Step 2: Convert to fraction form
    28,266.60/42,404.70 = 15,115.40/x
  3. Step 3: Cross multiply
    28,266.60x = 42,404.70 × 15,115.40
  4. Step 4: Simplify right side
    28,266.60x = 640,964,002.38
  5. Step 5: Solve for x
    x = 640,964,002.38/28,266.60
  6. Step 6: Final answer
    x = 22,675.67

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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.