Home / 11,895.45-16,411.95-7,917.19

Finding the Fourth Proportional to 11,895.45, 16,411.95 and 7,917.19

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Solution

The fourth proportional to 11,895.45, 16,411.95 and 7,917.19 is: 10,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.45 : 16,411.95 = 7,917.19 : x
  2. Step 2: Convert to fraction form
    11,895.45/16,411.95 = 7,917.19/x
  3. Step 3: Cross multiply
    11,895.45x = 16,411.95 × 7,917.19
  4. Step 4: Simplify right side
    11,895.45x = 129,936,526.42
  5. Step 5: Solve for x
    x = 129,936,526.42/11,895.45
  6. Step 6: Final answer
    x = 10,923.21

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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.