Home / 20,538.02-28,349.73-12,154.50

Finding the Fourth Proportional to 20,538.02, 28,349.73 and 12,154.50

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Solution

The fourth proportional to 20,538.02, 28,349.73 and 12,154.50 is: 16,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.02 : 28,349.73 = 12,154.50 : x
  2. Step 2: Convert to fraction form
    20,538.02/28,349.73 = 12,154.50/x
  3. Step 3: Cross multiply
    20,538.02x = 28,349.73 × 12,154.50
  4. Step 4: Simplify right side
    20,538.02x = 344,576,793.29
  5. Step 5: Solve for x
    x = 344,576,793.29/20,538.02
  6. Step 6: Final answer
    x = 16,777.51

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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.