Home / 21,624.58-29,835.16-12,191.32

Finding the Fourth Proportional to 21,624.58, 29,835.16 and 12,191.32

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Solution

The fourth proportional to 21,624.58, 29,835.16 and 12,191.32 is: 16,820.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.58 : 29,835.16 = 12,191.32 : x
  2. Step 2: Convert to fraction form
    21,624.58/29,835.16 = 12,191.32/x
  3. Step 3: Cross multiply
    21,624.58x = 29,835.16 × 12,191.32
  4. Step 4: Simplify right side
    21,624.58x = 363,729,982.81
  5. Step 5: Solve for x
    x = 363,729,982.81/21,624.58
  6. Step 6: Final answer
    x = 16,820.21

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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.