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Finding the Fourth Proportional to 28,569.35, 42,854.03 and 9,854.75

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Solution

The fourth proportional to 28,569.35, 42,854.03 and 9,854.75 is: 14,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.35 : 42,854.03 = 9,854.75 : x
  2. Step 2: Convert to fraction form
    28,569.35/42,854.03 = 9,854.75/x
  3. Step 3: Cross multiply
    28,569.35x = 42,854.03 × 9,854.75
  4. Step 4: Simplify right side
    28,569.35x = 422,315,488.60
  5. Step 5: Solve for x
    x = 422,315,488.60/28,569.35
  6. Step 6: Final answer
    x = 14,782.12

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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.