Home / 21,041.07-29,039.49-20,348.74

Finding the Fourth Proportional to 21,041.07, 29,039.49 and 20,348.74

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Solution

The fourth proportional to 21,041.07, 29,039.49 and 20,348.74 is: 28,083.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.07 : 29,039.49 = 20,348.74 : x
  2. Step 2: Convert to fraction form
    21,041.07/29,039.49 = 20,348.74/x
  3. Step 3: Cross multiply
    21,041.07x = 29,039.49 × 20,348.74
  4. Step 4: Simplify right side
    21,041.07x = 590,917,092.48
  5. Step 5: Solve for x
    x = 590,917,092.48/21,041.07
  6. Step 6: Final answer
    x = 28,083.99

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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.