Home / 13,860.94-19,128.10-7,487.53

Finding the Fourth Proportional to 13,860.94, 19,128.10 and 7,487.53

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Solution

The fourth proportional to 13,860.94, 19,128.10 and 7,487.53 is: 10,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.94 : 19,128.10 = 7,487.53 : x
  2. Step 2: Convert to fraction form
    13,860.94/19,128.10 = 7,487.53/x
  3. Step 3: Cross multiply
    13,860.94x = 19,128.10 × 7,487.53
  4. Step 4: Simplify right side
    13,860.94x = 143,222,282.38
  5. Step 5: Solve for x
    x = 143,222,282.38/13,860.94
  6. Step 6: Final answer
    x = 10,332.80

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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.