Home / 13,195.28-18,209.51-7,145.58

Finding the Fourth Proportional to 13,195.28, 18,209.51 and 7,145.58

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Solution

The fourth proportional to 13,195.28, 18,209.51 and 7,145.58 is: 9,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.28 : 18,209.51 = 7,145.58 : x
  2. Step 2: Convert to fraction form
    13,195.28/18,209.51 = 7,145.58/x
  3. Step 3: Cross multiply
    13,195.28x = 18,209.51 × 7,145.58
  4. Step 4: Simplify right side
    13,195.28x = 130,117,510.47
  5. Step 5: Solve for x
    x = 130,117,510.47/13,195.28
  6. Step 6: Final answer
    x = 9,860.91

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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.