Home / 20,760.19-28,648.89-11,807.68

Finding the Fourth Proportional to 20,760.19, 28,648.89 and 11,807.68

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Solution

The fourth proportional to 20,760.19, 28,648.89 and 11,807.68 is: 16,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.19 : 28,648.89 = 11,807.68 : x
  2. Step 2: Convert to fraction form
    20,760.19/28,648.89 = 11,807.68/x
  3. Step 3: Cross multiply
    20,760.19x = 28,648.89 × 11,807.68
  4. Step 4: Simplify right side
    20,760.19x = 338,276,925.48
  5. Step 5: Solve for x
    x = 338,276,925.48/20,760.19
  6. Step 6: Final answer
    x = 16,294.50

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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.