Home / 20,155.86-27,814.28-11,203.52

Finding the Fourth Proportional to 20,155.86, 27,814.28 and 11,203.52

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Solution

The fourth proportional to 20,155.86, 27,814.28 and 11,203.52 is: 15,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.86 : 27,814.28 = 11,203.52 : x
  2. Step 2: Convert to fraction form
    20,155.86/27,814.28 = 11,203.52/x
  3. Step 3: Cross multiply
    20,155.86x = 27,814.28 × 11,203.52
  4. Step 4: Simplify right side
    20,155.86x = 311,617,647.18
  5. Step 5: Solve for x
    x = 311,617,647.18/20,155.86
  6. Step 6: Final answer
    x = 15,460.40

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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.