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Finding the Fourth Proportional to 12,751.16, 19,119.38 and 4,950.86

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Solution

The fourth proportional to 12,751.16, 19,119.38 and 4,950.86 is: 7,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.16 : 19,119.38 = 4,950.86 : x
  2. Step 2: Convert to fraction form
    12,751.16/19,119.38 = 4,950.86/x
  3. Step 3: Cross multiply
    12,751.16x = 19,119.38 × 4,950.86
  4. Step 4: Simplify right side
    12,751.16x = 94,657,253.32
  5. Step 5: Solve for x
    x = 94,657,253.32/12,751.16
  6. Step 6: Final answer
    x = 7,423.43

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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.