Home / 20,281.19-27,987.39-11,784.02

Finding the Fourth Proportional to 20,281.19, 27,987.39 and 11,784.02

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Solution

The fourth proportional to 20,281.19, 27,987.39 and 11,784.02 is: 16,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.19 : 27,987.39 = 11,784.02 : x
  2. Step 2: Convert to fraction form
    20,281.19/27,987.39 = 11,784.02/x
  3. Step 3: Cross multiply
    20,281.19x = 27,987.39 × 11,784.02
  4. Step 4: Simplify right side
    20,281.19x = 329,803,823.57
  5. Step 5: Solve for x
    x = 329,803,823.57/20,281.19
  6. Step 6: Final answer
    x = 16,261.57

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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.