Home / 13,143.60-19,718.54-4,378.59

Finding the Fourth Proportional to 13,143.60, 19,718.54 and 4,378.59

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Solution

The fourth proportional to 13,143.60, 19,718.54 and 4,378.59 is: 6,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.60 : 19,718.54 = 4,378.59 : x
  2. Step 2: Convert to fraction form
    13,143.60/19,718.54 = 4,378.59/x
  3. Step 3: Cross multiply
    13,143.60x = 19,718.54 × 4,378.59
  4. Step 4: Simplify right side
    13,143.60x = 86,339,402.06
  5. Step 5: Solve for x
    x = 86,339,402.06/13,143.60
  6. Step 6: Final answer
    x = 6,568.93

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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.