Home / 12,207.40-16,816.12-10,409.04

Finding the Fourth Proportional to 12,207.40, 16,816.12 and 10,409.04

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Solution

The fourth proportional to 12,207.40, 16,816.12 and 10,409.04 is: 14,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.40 : 16,816.12 = 10,409.04 : x
  2. Step 2: Convert to fraction form
    12,207.40/16,816.12 = 10,409.04/x
  3. Step 3: Cross multiply
    12,207.40x = 16,816.12 × 10,409.04
  4. Step 4: Simplify right side
    12,207.40x = 175,039,639.70
  5. Step 5: Solve for x
    x = 175,039,639.70/12,207.40
  6. Step 6: Final answer
    x = 14,338.82

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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.