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Finding the Fourth Proportional to 19,210.32, 28,823.16 and 6,899.28

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Solution

The fourth proportional to 19,210.32, 28,823.16 and 6,899.28 is: 10,351.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.32 : 28,823.16 = 6,899.28 : x
  2. Step 2: Convert to fraction form
    19,210.32/28,823.16 = 6,899.28/x
  3. Step 3: Cross multiply
    19,210.32x = 28,823.16 × 6,899.28
  4. Step 4: Simplify right side
    19,210.32x = 198,859,051.32
  5. Step 5: Solve for x
    x = 198,859,051.32/19,210.32
  6. Step 6: Final answer
    x = 10,351.68

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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.