Home / 20,538.05-28,343.52-12,040.07

Finding the Fourth Proportional to 20,538.05, 28,343.52 and 12,040.07

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Solution

The fourth proportional to 20,538.05, 28,343.52 and 12,040.07 is: 16,615.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.05 : 28,343.52 = 12,040.07 : x
  2. Step 2: Convert to fraction form
    20,538.05/28,343.52 = 12,040.07/x
  3. Step 3: Cross multiply
    20,538.05x = 28,343.52 × 12,040.07
  4. Step 4: Simplify right side
    20,538.05x = 341,257,823.13
  5. Step 5: Solve for x
    x = 341,257,823.13/20,538.05
  6. Step 6: Final answer
    x = 16,615.89

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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.