Home / 21,999.40-30,363.58-13,051.86

Finding the Fourth Proportional to 21,999.40, 30,363.58 and 13,051.86

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Solution

The fourth proportional to 21,999.40, 30,363.58 and 13,051.86 is: 18,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.40 : 30,363.58 = 13,051.86 : x
  2. Step 2: Convert to fraction form
    21,999.40/30,363.58 = 13,051.86/x
  3. Step 3: Cross multiply
    21,999.40x = 30,363.58 × 13,051.86
  4. Step 4: Simplify right side
    21,999.40x = 396,301,195.26
  5. Step 5: Solve for x
    x = 396,301,195.26/21,999.40
  6. Step 6: Final answer
    x = 18,014.18

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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.