Home / 13,143.20-19,715.00-4,378.13

Finding the Fourth Proportional to 13,143.20, 19,715.00 and 4,378.13

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Solution

The fourth proportional to 13,143.20, 19,715.00 and 4,378.13 is: 6,567.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.20 : 19,715.00 = 4,378.13 : x
  2. Step 2: Convert to fraction form
    13,143.20/19,715.00 = 4,378.13/x
  3. Step 3: Cross multiply
    13,143.20x = 19,715.00 × 4,378.13
  4. Step 4: Simplify right side
    13,143.20x = 86,314,712.48
  5. Step 5: Solve for x
    x = 86,314,712.48/13,143.20
  6. Step 6: Final answer
    x = 6,567.25

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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.