Home / 19,078.16-28,589.56-9,705.15

Finding the Fourth Proportional to 19,078.16, 28,589.56 and 9,705.15

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Solution

The fourth proportional to 19,078.16, 28,589.56 and 9,705.15 is: 14,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,078.16 : 28,589.56 = 9,705.15 : x
  2. Step 2: Convert to fraction form
    19,078.16/28,589.56 = 9,705.15/x
  3. Step 3: Cross multiply
    19,078.16x = 28,589.56 × 9,705.15
  4. Step 4: Simplify right side
    19,078.16x = 277,466,064.58
  5. Step 5: Solve for x
    x = 277,466,064.58/19,078.16
  6. Step 6: Final answer
    x = 14,543.65

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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.