Home / 20,999.16-31,498.74-19,716.12

Finding the Fourth Proportional to 20,999.16, 31,498.74 and 19,716.12

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Solution

The fourth proportional to 20,999.16, 31,498.74 and 19,716.12 is: 29,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.16 : 31,498.74 = 19,716.12 : x
  2. Step 2: Convert to fraction form
    20,999.16/31,498.74 = 19,716.12/x
  3. Step 3: Cross multiply
    20,999.16x = 31,498.74 × 19,716.12
  4. Step 4: Simplify right side
    20,999.16x = 621,032,937.69
  5. Step 5: Solve for x
    x = 621,032,937.69/20,999.16
  6. Step 6: Final answer
    x = 29,574.18

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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.