Home / 13,124.23-18,108.66-7,820.75

Finding the Fourth Proportional to 13,124.23, 18,108.66 and 7,820.75

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Solution

The fourth proportional to 13,124.23, 18,108.66 and 7,820.75 is: 10,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.23 : 18,108.66 = 7,820.75 : x
  2. Step 2: Convert to fraction form
    13,124.23/18,108.66 = 7,820.75/x
  3. Step 3: Cross multiply
    13,124.23x = 18,108.66 × 7,820.75
  4. Step 4: Simplify right side
    13,124.23x = 141,623,377.29
  5. Step 5: Solve for x
    x = 141,623,377.29/13,124.23
  6. Step 6: Final answer
    x = 10,790.99

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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.