Home / 13,817.39-19,071.08-8,780.63

Finding the Fourth Proportional to 13,817.39, 19,071.08 and 8,780.63

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Solution

The fourth proportional to 13,817.39, 19,071.08 and 8,780.63 is: 12,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.39 : 19,071.08 = 8,780.63 : x
  2. Step 2: Convert to fraction form
    13,817.39/19,071.08 = 8,780.63/x
  3. Step 3: Cross multiply
    13,817.39x = 19,071.08 × 8,780.63
  4. Step 4: Simplify right side
    13,817.39x = 167,456,019.79
  5. Step 5: Solve for x
    x = 167,456,019.79/13,817.39
  6. Step 6: Final answer
    x = 12,119.22

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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.