Home / 20,271.12-27,973.60-11,318.38

Finding the Fourth Proportional to 20,271.12, 27,973.60 and 11,318.38

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Solution

The fourth proportional to 20,271.12, 27,973.60 and 11,318.38 is: 15,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.12 : 27,973.60 = 11,318.38 : x
  2. Step 2: Convert to fraction form
    20,271.12/27,973.60 = 11,318.38/x
  3. Step 3: Cross multiply
    20,271.12x = 27,973.60 × 11,318.38
  4. Step 4: Simplify right side
    20,271.12x = 316,615,834.77
  5. Step 5: Solve for x
    x = 316,615,834.77/20,271.12
  6. Step 6: Final answer
    x = 15,619.06

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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.