Home / 19,109.60-28,640.10-9,227.60

Finding the Fourth Proportional to 19,109.60, 28,640.10 and 9,227.60

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Solution

The fourth proportional to 19,109.60, 28,640.10 and 9,227.60 is: 13,829.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.60 : 28,640.10 = 9,227.60 : x
  2. Step 2: Convert to fraction form
    19,109.60/28,640.10 = 9,227.60/x
  3. Step 3: Cross multiply
    19,109.60x = 28,640.10 × 9,227.60
  4. Step 4: Simplify right side
    19,109.60x = 264,279,386.76
  5. Step 5: Solve for x
    x = 264,279,386.76/19,109.60
  6. Step 6: Final answer
    x = 13,829.67

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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.