Home / 20,220.03-27,895.68-13,510.04

Finding the Fourth Proportional to 20,220.03, 27,895.68 and 13,510.04

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Solution

The fourth proportional to 20,220.03, 27,895.68 and 13,510.04 is: 18,638.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.03 : 27,895.68 = 13,510.04 : x
  2. Step 2: Convert to fraction form
    20,220.03/27,895.68 = 13,510.04/x
  3. Step 3: Cross multiply
    20,220.03x = 27,895.68 × 13,510.04
  4. Step 4: Simplify right side
    20,220.03x = 376,871,716.66
  5. Step 5: Solve for x
    x = 376,871,716.66/20,220.03
  6. Step 6: Final answer
    x = 18,638.54

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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.