Home / 21,202.04-31,741.16-15,888.78

Finding the Fourth Proportional to 21,202.04, 31,741.16 and 15,888.78

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Solution

The fourth proportional to 21,202.04, 31,741.16 and 15,888.78 is: 23,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.04 : 31,741.16 = 15,888.78 : x
  2. Step 2: Convert to fraction form
    21,202.04/31,741.16 = 15,888.78/x
  3. Step 3: Cross multiply
    21,202.04x = 31,741.16 × 15,888.78
  4. Step 4: Simplify right side
    21,202.04x = 504,328,228.74
  5. Step 5: Solve for x
    x = 504,328,228.74/21,202.04
  6. Step 6: Final answer
    x = 23,786.78

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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.