Home / 20,807.35-28,709.89-11,852.49

Finding the Fourth Proportional to 20,807.35, 28,709.89 and 11,852.49

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Solution

The fourth proportional to 20,807.35, 28,709.89 and 11,852.49 is: 16,354.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.35 : 28,709.89 = 11,852.49 : x
  2. Step 2: Convert to fraction form
    20,807.35/28,709.89 = 11,852.49/x
  3. Step 3: Cross multiply
    20,807.35x = 28,709.89 × 11,852.49
  4. Step 4: Simplify right side
    20,807.35x = 340,283,828.83
  5. Step 5: Solve for x
    x = 340,283,828.83/20,807.35
  6. Step 6: Final answer
    x = 16,354.02

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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.