Home / 13,809.24-20,721.06-7,572.20

Finding the Fourth Proportional to 13,809.24, 20,721.06 and 7,572.20

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Solution

The fourth proportional to 13,809.24, 20,721.06 and 7,572.20 is: 11,362.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.24 : 20,721.06 = 7,572.20 : x
  2. Step 2: Convert to fraction form
    13,809.24/20,721.06 = 7,572.20/x
  3. Step 3: Cross multiply
    13,809.24x = 20,721.06 × 7,572.20
  4. Step 4: Simplify right side
    13,809.24x = 156,903,906.93
  5. Step 5: Solve for x
    x = 156,903,906.93/13,809.24
  6. Step 6: Final answer
    x = 11,362.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.