Home / 13,829.87-19,084.47-7,860.71

Finding the Fourth Proportional to 13,829.87, 19,084.47 and 7,860.71

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Solution

The fourth proportional to 13,829.87, 19,084.47 and 7,860.71 is: 10,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.87 : 19,084.47 = 7,860.71 : x
  2. Step 2: Convert to fraction form
    13,829.87/19,084.47 = 7,860.71/x
  3. Step 3: Cross multiply
    13,829.87x = 19,084.47 × 7,860.71
  4. Step 4: Simplify right side
    13,829.87x = 150,017,484.17
  5. Step 5: Solve for x
    x = 150,017,484.17/13,829.87
  6. Step 6: Final answer
    x = 10,847.35

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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.