Home / 20,155.86-27,805.41-17,356.50

Finding the Fourth Proportional to 20,155.86, 27,805.41 and 17,356.50

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Solution

The fourth proportional to 20,155.86, 27,805.41 and 17,356.50 is: 23,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.86 : 27,805.41 = 17,356.50 : x
  2. Step 2: Convert to fraction form
    20,155.86/27,805.41 = 17,356.50/x
  3. Step 3: Cross multiply
    20,155.86x = 27,805.41 × 17,356.50
  4. Step 4: Simplify right side
    20,155.86x = 482,604,598.67
  5. Step 5: Solve for x
    x = 482,604,598.67/20,155.86
  6. Step 6: Final answer
    x = 23,943.64

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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.