Home / 21,205.04-31,759.11-10,119.51

Finding the Fourth Proportional to 21,205.04, 31,759.11 and 10,119.51

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Solution

The fourth proportional to 21,205.04, 31,759.11 and 10,119.51 is: 15,156.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.04 : 31,759.11 = 10,119.51 : x
  2. Step 2: Convert to fraction form
    21,205.04/31,759.11 = 10,119.51/x
  3. Step 3: Cross multiply
    21,205.04x = 31,759.11 × 10,119.51
  4. Step 4: Simplify right side
    21,205.04x = 321,386,631.24
  5. Step 5: Solve for x
    x = 321,386,631.24/21,205.04
  6. Step 6: Final answer
    x = 15,156.14

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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.