Home / 21,014.54-28,999.88-11,454.43

Finding the Fourth Proportional to 21,014.54, 28,999.88 and 11,454.43

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Solution

The fourth proportional to 21,014.54, 28,999.88 and 11,454.43 is: 15,807.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.54 : 28,999.88 = 11,454.43 : x
  2. Step 2: Convert to fraction form
    21,014.54/28,999.88 = 11,454.43/x
  3. Step 3: Cross multiply
    21,014.54x = 28,999.88 × 11,454.43
  4. Step 4: Simplify right side
    21,014.54x = 332,176,893.20
  5. Step 5: Solve for x
    x = 332,176,893.20/21,014.54
  6. Step 6: Final answer
    x = 15,807.00

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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.