Home / 19,107.13-28,661.43-9,106.72

Finding the Fourth Proportional to 19,107.13, 28,661.43 and 9,106.72

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Solution

The fourth proportional to 19,107.13, 28,661.43 and 9,106.72 is: 13,660.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.13 : 28,661.43 = 9,106.72 : x
  2. Step 2: Convert to fraction form
    19,107.13/28,661.43 = 9,106.72/x
  3. Step 3: Cross multiply
    19,107.13x = 28,661.43 × 9,106.72
  4. Step 4: Simplify right side
    19,107.13x = 261,011,617.81
  5. Step 5: Solve for x
    x = 261,011,617.81/19,107.13
  6. Step 6: Final answer
    x = 13,660.43

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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.