Home / 13,860.99-19,128.15-7,487.58

Finding the Fourth Proportional to 13,860.99, 19,128.15 and 7,487.58

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Solution

The fourth proportional to 13,860.99, 19,128.15 and 7,487.58 is: 10,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.99 : 19,128.15 = 7,487.58 : x
  2. Step 2: Convert to fraction form
    13,860.99/19,128.15 = 7,487.58/x
  3. Step 3: Cross multiply
    13,860.99x = 19,128.15 × 7,487.58
  4. Step 4: Simplify right side
    13,860.99x = 143,223,553.38
  5. Step 5: Solve for x
    x = 143,223,553.38/13,860.99
  6. Step 6: Final answer
    x = 10,332.85

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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.