Home / 20,862.02-28,789.93-11,429.98

Finding the Fourth Proportional to 20,862.02, 28,789.93 and 11,429.98

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Solution

The fourth proportional to 20,862.02, 28,789.93 and 11,429.98 is: 15,773.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.02 : 28,789.93 = 11,429.98 : x
  2. Step 2: Convert to fraction form
    20,862.02/28,789.93 = 11,429.98/x
  3. Step 3: Cross multiply
    20,862.02x = 28,789.93 × 11,429.98
  4. Step 4: Simplify right side
    20,862.02x = 329,068,266.41
  5. Step 5: Solve for x
    x = 329,068,266.41/20,862.02
  6. Step 6: Final answer
    x = 15,773.56

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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.