Home / 13,410.76-19,974.47-12,708.19

Finding the Fourth Proportional to 13,410.76, 19,974.47 and 12,708.19

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Solution

The fourth proportional to 13,410.76, 19,974.47 and 12,708.19 is: 18,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.76 : 19,974.47 = 12,708.19 : x
  2. Step 2: Convert to fraction form
    13,410.76/19,974.47 = 12,708.19/x
  3. Step 3: Cross multiply
    13,410.76x = 19,974.47 × 12,708.19
  4. Step 4: Simplify right side
    13,410.76x = 253,839,359.91
  5. Step 5: Solve for x
    x = 253,839,359.91/13,410.76
  6. Step 6: Final answer
    x = 18,928.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.