Home / 21,965.65-32,970.35-12,109.57

Finding the Fourth Proportional to 21,965.65, 32,970.35 and 12,109.57

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Solution

The fourth proportional to 21,965.65, 32,970.35 and 12,109.57 is: 18,176.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.65 : 32,970.35 = 12,109.57 : x
  2. Step 2: Convert to fraction form
    21,965.65/32,970.35 = 12,109.57/x
  3. Step 3: Cross multiply
    21,965.65x = 32,970.35 × 12,109.57
  4. Step 4: Simplify right side
    21,965.65x = 399,256,761.25
  5. Step 5: Solve for x
    x = 399,256,761.25/21,965.65
  6. Step 6: Final answer
    x = 18,176.41

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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.