Home / 20,979.77-28,953.03-13,024.58

Finding the Fourth Proportional to 20,979.77, 28,953.03 and 13,024.58

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Solution

The fourth proportional to 20,979.77, 28,953.03 and 13,024.58 is: 17,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.77 : 28,953.03 = 13,024.58 : x
  2. Step 2: Convert to fraction form
    20,979.77/28,953.03 = 13,024.58/x
  3. Step 3: Cross multiply
    20,979.77x = 28,953.03 × 13,024.58
  4. Step 4: Simplify right side
    20,979.77x = 377,101,055.48
  5. Step 5: Solve for x
    x = 377,101,055.48/20,979.77
  6. Step 6: Final answer
    x = 17,974.51

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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.