Home / 12,167.15-16,789.15-7,130.22

Finding the Fourth Proportional to 12,167.15, 16,789.15 and 7,130.22

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Solution

The fourth proportional to 12,167.15, 16,789.15 and 7,130.22 is: 9,838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,167.15 : 16,789.15 = 7,130.22 : x
  2. Step 2: Convert to fraction form
    12,167.15/16,789.15 = 7,130.22/x
  3. Step 3: Cross multiply
    12,167.15x = 16,789.15 × 7,130.22
  4. Step 4: Simplify right side
    12,167.15x = 119,710,270.44
  5. Step 5: Solve for x
    x = 119,710,270.44/12,167.15
  6. Step 6: Final answer
    x = 9,838.81

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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.