Home / 20,085.84-27,719.28-11,590.56

Finding the Fourth Proportional to 20,085.84, 27,719.28 and 11,590.56

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Solution

The fourth proportional to 20,085.84, 27,719.28 and 11,590.56 is: 15,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.84 : 27,719.28 = 11,590.56 : x
  2. Step 2: Convert to fraction form
    20,085.84/27,719.28 = 11,590.56/x
  3. Step 3: Cross multiply
    20,085.84x = 27,719.28 × 11,590.56
  4. Step 4: Simplify right side
    20,085.84x = 321,281,978.00
  5. Step 5: Solve for x
    x = 321,281,978.00/20,085.84
  6. Step 6: Final answer
    x = 15,995.45

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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.