Home / 21,404.40-32,106.60-19,108.05

Finding the Fourth Proportional to 21,404.40, 32,106.60 and 19,108.05

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Solution

The fourth proportional to 21,404.40, 32,106.60 and 19,108.05 is: 28,662.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.40 : 32,106.60 = 19,108.05 : x
  2. Step 2: Convert to fraction form
    21,404.40/32,106.60 = 19,108.05/x
  3. Step 3: Cross multiply
    21,404.40x = 32,106.60 × 19,108.05
  4. Step 4: Simplify right side
    21,404.40x = 613,494,518.13
  5. Step 5: Solve for x
    x = 613,494,518.13/21,404.40
  6. Step 6: Final answer
    x = 28,662.08

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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.