Home / 19,320.78-28,983.45-6,838.20

Finding the Fourth Proportional to 19,320.78, 28,983.45 and 6,838.20

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Solution

The fourth proportional to 19,320.78, 28,983.45 and 6,838.20 is: 10,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.78 : 28,983.45 = 6,838.20 : x
  2. Step 2: Convert to fraction form
    19,320.78/28,983.45 = 6,838.20/x
  3. Step 3: Cross multiply
    19,320.78x = 28,983.45 × 6,838.20
  4. Step 4: Simplify right side
    19,320.78x = 198,194,627.79
  5. Step 5: Solve for x
    x = 198,194,627.79/19,320.78
  6. Step 6: Final answer
    x = 10,258.11

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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.