Home / 19,929.20-27,503.55-10,976.70

Finding the Fourth Proportional to 19,929.20, 27,503.55 and 10,976.70

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Solution

The fourth proportional to 19,929.20, 27,503.55 and 10,976.70 is: 15,148.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.20 : 27,503.55 = 10,976.70 : x
  2. Step 2: Convert to fraction form
    19,929.20/27,503.55 = 10,976.70/x
  3. Step 3: Cross multiply
    19,929.20x = 27,503.55 × 10,976.70
  4. Step 4: Simplify right side
    19,929.20x = 301,898,258.60
  5. Step 5: Solve for x
    x = 301,898,258.60/19,929.20
  6. Step 6: Final answer
    x = 15,148.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.