Home / 15,190.61-20,963.54-8,816.72

Finding the Fourth Proportional to 15,190.61, 20,963.54 and 8,816.72

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Solution

The fourth proportional to 15,190.61, 20,963.54 and 8,816.72 is: 12,167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.61 : 20,963.54 = 8,816.72 : x
  2. Step 2: Convert to fraction form
    15,190.61/20,963.54 = 8,816.72/x
  3. Step 3: Cross multiply
    15,190.61x = 20,963.54 × 8,816.72
  4. Step 4: Simplify right side
    15,190.61x = 184,829,662.39
  5. Step 5: Solve for x
    x = 184,829,662.39/15,190.61
  6. Step 6: Final answer
    x = 12,167.36

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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.