Home / 20,833.02-28,748.48-11,399.76

Finding the Fourth Proportional to 20,833.02, 28,748.48 and 11,399.76

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Solution

The fourth proportional to 20,833.02, 28,748.48 and 11,399.76 is: 15,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.02 : 28,748.48 = 11,399.76 : x
  2. Step 2: Convert to fraction form
    20,833.02/28,748.48 = 11,399.76/x
  3. Step 3: Cross multiply
    20,833.02x = 28,748.48 × 11,399.76
  4. Step 4: Simplify right side
    20,833.02x = 327,725,772.36
  5. Step 5: Solve for x
    x = 327,725,772.36/20,833.02
  6. Step 6: Final answer
    x = 15,731.07

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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.