Home / 20,803.47-28,648.31-18,076.85

Finding the Fourth Proportional to 20,803.47, 28,648.31 and 18,076.85

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Solution

The fourth proportional to 20,803.47, 28,648.31 and 18,076.85 is: 24,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.47 : 28,648.31 = 18,076.85 : x
  2. Step 2: Convert to fraction form
    20,803.47/28,648.31 = 18,076.85/x
  3. Step 3: Cross multiply
    20,803.47x = 28,648.31 × 18,076.85
  4. Step 4: Simplify right side
    20,803.47x = 517,871,339.26
  5. Step 5: Solve for x
    x = 517,871,339.26/20,803.47
  6. Step 6: Final answer
    x = 24,893.51

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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.