Home / 21,146.97-31,869.10-19,041.18

Finding the Fourth Proportional to 21,146.97, 31,869.10 and 19,041.18

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Solution

The fourth proportional to 21,146.97, 31,869.10 and 19,041.18 is: 28,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.97 : 31,869.10 = 19,041.18 : x
  2. Step 2: Convert to fraction form
    21,146.97/31,869.10 = 19,041.18/x
  3. Step 3: Cross multiply
    21,146.97x = 31,869.10 × 19,041.18
  4. Step 4: Simplify right side
    21,146.97x = 606,825,066.72
  5. Step 5: Solve for x
    x = 606,825,066.72/21,146.97
  6. Step 6: Final answer
    x = 28,695.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.