Home / 13,501.10-18,640.19-8,472.22

Finding the Fourth Proportional to 13,501.10, 18,640.19 and 8,472.22

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Solution

The fourth proportional to 13,501.10, 18,640.19 and 8,472.22 is: 11,697.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.10 : 18,640.19 = 8,472.22 : x
  2. Step 2: Convert to fraction form
    13,501.10/18,640.19 = 8,472.22/x
  3. Step 3: Cross multiply
    13,501.10x = 18,640.19 × 8,472.22
  4. Step 4: Simplify right side
    13,501.10x = 157,923,790.52
  5. Step 5: Solve for x
    x = 157,923,790.52/13,501.10
  6. Step 6: Final answer
    x = 11,697.11

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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.