Home / 20,679.63-28,538.02-11,248.26

Finding the Fourth Proportional to 20,679.63, 28,538.02 and 11,248.26

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Solution

The fourth proportional to 20,679.63, 28,538.02 and 11,248.26 is: 15,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.63 : 28,538.02 = 11,248.26 : x
  2. Step 2: Convert to fraction form
    20,679.63/28,538.02 = 11,248.26/x
  3. Step 3: Cross multiply
    20,679.63x = 28,538.02 × 11,248.26
  4. Step 4: Simplify right side
    20,679.63x = 321,002,926.16
  5. Step 5: Solve for x
    x = 321,002,926.16/20,679.63
  6. Step 6: Final answer
    x = 15,522.67

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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.