Home / 20,866.98-28,796.40-11,435.52

Finding the Fourth Proportional to 20,866.98, 28,796.40 and 11,435.52

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Solution

The fourth proportional to 20,866.98, 28,796.40 and 11,435.52 is: 15,781.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.98 : 28,796.40 = 11,435.52 : x
  2. Step 2: Convert to fraction form
    20,866.98/28,796.40 = 11,435.52/x
  3. Step 3: Cross multiply
    20,866.98x = 28,796.40 × 11,435.52
  4. Step 4: Simplify right side
    20,866.98x = 329,301,808.13
  5. Step 5: Solve for x
    x = 329,301,808.13/20,866.98
  6. Step 6: Final answer
    x = 15,781.00

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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.