Home / 38,211.21-52,731.68-21,215.21

Finding the Fourth Proportional to 38,211.21, 52,731.68 and 21,215.21

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Solution

The fourth proportional to 38,211.21, 52,731.68 and 21,215.21 is: 29,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,211.21 : 52,731.68 = 21,215.21 : x
  2. Step 2: Convert to fraction form
    38,211.21/52,731.68 = 21,215.21/x
  3. Step 3: Cross multiply
    38,211.21x = 52,731.68 × 21,215.21
  4. Step 4: Simplify right side
    38,211.21x = 1,118,713,295.12
  5. Step 5: Solve for x
    x = 1,118,713,295.12/38,211.21
  6. Step 6: Final answer
    x = 29,277.10

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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.