Home / 12,557.34-18,839.15-8,866.79

Finding the Fourth Proportional to 12,557.34, 18,839.15 and 8,866.79

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Solution

The fourth proportional to 12,557.34, 18,839.15 and 8,866.79 is: 13,302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557.34 : 18,839.15 = 8,866.79 : x
  2. Step 2: Convert to fraction form
    12,557.34/18,839.15 = 8,866.79/x
  3. Step 3: Cross multiply
    12,557.34x = 18,839.15 × 8,866.79
  4. Step 4: Simplify right side
    12,557.34x = 167,042,648.30
  5. Step 5: Solve for x
    x = 167,042,648.30/12,557.34
  6. Step 6: Final answer
    x = 13,302.39

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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.