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Finding the Fourth Proportional to 15,647.13, 21,594.84 and 8,933.71

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Solution

The fourth proportional to 15,647.13, 21,594.84 and 8,933.71 is: 12,329.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.13 : 21,594.84 = 8,933.71 : x
  2. Step 2: Convert to fraction form
    15,647.13/21,594.84 = 8,933.71/x
  3. Step 3: Cross multiply
    15,647.13x = 21,594.84 × 8,933.71
  4. Step 4: Simplify right side
    15,647.13x = 192,922,038.06
  5. Step 5: Solve for x
    x = 192,922,038.06/15,647.13
  6. Step 6: Final answer
    x = 12,329.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.