Home / 21,397.40-32,112.30-13,999.40

Finding the Fourth Proportional to 21,397.40, 32,112.30 and 13,999.40

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Solution

The fourth proportional to 21,397.40, 32,112.30 and 13,999.40 is: 21,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.40 : 32,112.30 = 13,999.40 : x
  2. Step 2: Convert to fraction form
    21,397.40/32,112.30 = 13,999.40/x
  3. Step 3: Cross multiply
    21,397.40x = 32,112.30 × 13,999.40
  4. Step 4: Simplify right side
    21,397.40x = 449,552,932.62
  5. Step 5: Solve for x
    x = 449,552,932.62/21,397.40
  6. Step 6: Final answer
    x = 21,009.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.