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Finding the Fourth Proportional to 19,212.32, 28,826.16 and 6,901.28

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Solution

The fourth proportional to 19,212.32, 28,826.16 and 6,901.28 is: 10,354.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212.32 : 28,826.16 = 6,901.28 : x
  2. Step 2: Convert to fraction form
    19,212.32/28,826.16 = 6,901.28/x
  3. Step 3: Cross multiply
    19,212.32x = 28,826.16 × 6,901.28
  4. Step 4: Simplify right side
    19,212.32x = 198,937,401.48
  5. Step 5: Solve for x
    x = 198,937,401.48/19,212.32
  6. Step 6: Final answer
    x = 10,354.68

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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.