Home / 20,785.92-28,681.25-11,833.59

Finding the Fourth Proportional to 20,785.92, 28,681.25 and 11,833.59

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Solution

The fourth proportional to 20,785.92, 28,681.25 and 11,833.59 is: 16,328.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785.92 : 28,681.25 = 11,833.59 : x
  2. Step 2: Convert to fraction form
    20,785.92/28,681.25 = 11,833.59/x
  3. Step 3: Cross multiply
    20,785.92x = 28,681.25 × 11,833.59
  4. Step 4: Simplify right side
    20,785.92x = 339,402,094.02
  5. Step 5: Solve for x
    x = 339,402,094.02/20,785.92
  6. Step 6: Final answer
    x = 16,328.46

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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.