Home / 21,184.12-31,737.45-9,918.79

Finding the Fourth Proportional to 21,184.12, 31,737.45 and 9,918.79

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Solution

The fourth proportional to 21,184.12, 31,737.45 and 9,918.79 is: 14,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.12 : 31,737.45 = 9,918.79 : x
  2. Step 2: Convert to fraction form
    21,184.12/31,737.45 = 9,918.79/x
  3. Step 3: Cross multiply
    21,184.12x = 31,737.45 × 9,918.79
  4. Step 4: Simplify right side
    21,184.12x = 314,797,238.06
  5. Step 5: Solve for x
    x = 314,797,238.06/21,184.12
  6. Step 6: Final answer
    x = 14,860.06

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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.