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Finding the Fourth Proportional to 15,674.74, 21,627.71 and 9,933.86

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Solution

The fourth proportional to 15,674.74, 21,627.71 and 9,933.86 is: 13,706.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,674.74 : 21,627.71 = 9,933.86 : x
  2. Step 2: Convert to fraction form
    15,674.74/21,627.71 = 9,933.86/x
  3. Step 3: Cross multiply
    15,674.74x = 21,627.71 × 9,933.86
  4. Step 4: Simplify right side
    15,674.74x = 214,846,643.26
  5. Step 5: Solve for x
    x = 214,846,643.26/15,674.74
  6. Step 6: Final answer
    x = 13,706.55

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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.