Home / 20,875.75-28,807.87-11,801.46

Finding the Fourth Proportional to 20,875.75, 28,807.87 and 11,801.46

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Solution

The fourth proportional to 20,875.75, 28,807.87 and 11,801.46 is: 16,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.75 : 28,807.87 = 11,801.46 : x
  2. Step 2: Convert to fraction form
    20,875.75/28,807.87 = 11,801.46/x
  3. Step 3: Cross multiply
    20,875.75x = 28,807.87 × 11,801.46
  4. Step 4: Simplify right side
    20,875.75x = 339,974,854.82
  5. Step 5: Solve for x
    x = 339,974,854.82/20,875.75
  6. Step 6: Final answer
    x = 16,285.64

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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.