Home / 20,219.08-27,929.55-18,332.77

Finding the Fourth Proportional to 20,219.08, 27,929.55 and 18,332.77

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Solution

The fourth proportional to 20,219.08, 27,929.55 and 18,332.77 is: 25,323.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.08 : 27,929.55 = 18,332.77 : x
  2. Step 2: Convert to fraction form
    20,219.08/27,929.55 = 18,332.77/x
  3. Step 3: Cross multiply
    20,219.08x = 27,929.55 × 18,332.77
  4. Step 4: Simplify right side
    20,219.08x = 512,026,016.35
  5. Step 5: Solve for x
    x = 512,026,016.35/20,219.08
  6. Step 6: Final answer
    x = 25,323.90

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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.