Home / 13,124.08-18,111.21-7,155.75

Finding the Fourth Proportional to 13,124.08, 18,111.21 and 7,155.75

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Solution

The fourth proportional to 13,124.08, 18,111.21 and 7,155.75 is: 9,874.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.08 : 18,111.21 = 7,155.75 : x
  2. Step 2: Convert to fraction form
    13,124.08/18,111.21 = 7,155.75/x
  3. Step 3: Cross multiply
    13,124.08x = 18,111.21 × 7,155.75
  4. Step 4: Simplify right side
    13,124.08x = 129,599,290.96
  5. Step 5: Solve for x
    x = 129,599,290.96/13,124.08
  6. Step 6: Final answer
    x = 9,874.92

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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.