Home / 20,543.61-28,324.49-17,145.51

Finding the Fourth Proportional to 20,543.61, 28,324.49 and 17,145.51

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Solution

The fourth proportional to 20,543.61, 28,324.49 and 17,145.51 is: 23,639.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.61 : 28,324.49 = 17,145.51 : x
  2. Step 2: Convert to fraction form
    20,543.61/28,324.49 = 17,145.51/x
  3. Step 3: Cross multiply
    20,543.61x = 28,324.49 × 17,145.51
  4. Step 4: Simplify right side
    20,543.61x = 485,637,826.54
  5. Step 5: Solve for x
    x = 485,637,826.54/20,543.61
  6. Step 6: Final answer
    x = 23,639.36

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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.