Home / 20,866.48-28,798.50-11,911.96

Finding the Fourth Proportional to 20,866.48, 28,798.50 and 11,911.96

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Solution

The fourth proportional to 20,866.48, 28,798.50 and 11,911.96 is: 16,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.48 : 28,798.50 = 11,911.96 : x
  2. Step 2: Convert to fraction form
    20,866.48/28,798.50 = 11,911.96/x
  3. Step 3: Cross multiply
    20,866.48x = 28,798.50 × 11,911.96
  4. Step 4: Simplify right side
    20,866.48x = 343,046,580.06
  5. Step 5: Solve for x
    x = 343,046,580.06/20,866.48
  6. Step 6: Final answer
    x = 16,440.08

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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.