Home / 13,124.94-18,112.26-7,156.65

Finding the Fourth Proportional to 13,124.94, 18,112.26 and 7,156.65

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Solution

The fourth proportional to 13,124.94, 18,112.26 and 7,156.65 is: 9,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.94 : 18,112.26 = 7,156.65 : x
  2. Step 2: Convert to fraction form
    13,124.94/18,112.26 = 7,156.65/x
  3. Step 3: Cross multiply
    13,124.94x = 18,112.26 × 7,156.65
  4. Step 4: Simplify right side
    13,124.94x = 129,623,160.03
  5. Step 5: Solve for x
    x = 129,623,160.03/13,124.94
  6. Step 6: Final answer
    x = 9,876.10

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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.