Home / 13,124.99-18,112.86-7,156.77

Finding the Fourth Proportional to 13,124.99, 18,112.86 and 7,156.77

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Solution

The fourth proportional to 13,124.99, 18,112.86 and 7,156.77 is: 9,876.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.99 : 18,112.86 = 7,156.77 : x
  2. Step 2: Convert to fraction form
    13,124.99/18,112.86 = 7,156.77/x
  3. Step 3: Cross multiply
    13,124.99x = 18,112.86 × 7,156.77
  4. Step 4: Simplify right side
    13,124.99x = 129,629,573.06
  5. Step 5: Solve for x
    x = 129,629,573.06/13,124.99
  6. Step 6: Final answer
    x = 9,876.55

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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.