Home / 21,445.25-32,148.70-10,909.37

Finding the Fourth Proportional to 21,445.25, 32,148.70 and 10,909.37

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Solution

The fourth proportional to 21,445.25, 32,148.70 and 10,909.37 is: 16,354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,445.25 : 32,148.70 = 10,909.37 : x
  2. Step 2: Convert to fraction form
    21,445.25/32,148.70 = 10,909.37/x
  3. Step 3: Cross multiply
    21,445.25x = 32,148.70 × 10,909.37
  4. Step 4: Simplify right side
    21,445.25x = 350,722,063.32
  5. Step 5: Solve for x
    x = 350,722,063.32/21,445.25
  6. Step 6: Final answer
    x = 16,354.30

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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.