Home / 13,920.93-19,213.40-8,886.71

Finding the Fourth Proportional to 13,920.93, 19,213.40 and 8,886.71

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Solution

The fourth proportional to 13,920.93, 19,213.40 and 8,886.71 is: 12,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.93 : 19,213.40 = 8,886.71 : x
  2. Step 2: Convert to fraction form
    13,920.93/19,213.40 = 8,886.71/x
  3. Step 3: Cross multiply
    13,920.93x = 19,213.40 × 8,886.71
  4. Step 4: Simplify right side
    13,920.93x = 170,743,984.16
  5. Step 5: Solve for x
    x = 170,743,984.16/13,920.93
  6. Step 6: Final answer
    x = 12,265.27

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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.