Home / 21,480.74-32,219.84-12,771.08

Finding the Fourth Proportional to 21,480.74, 32,219.84 and 12,771.08

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Solution

The fourth proportional to 21,480.74, 32,219.84 and 12,771.08 is: 19,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.74 : 32,219.84 = 12,771.08 : x
  2. Step 2: Convert to fraction form
    21,480.74/32,219.84 = 12,771.08/x
  3. Step 3: Cross multiply
    21,480.74x = 32,219.84 × 12,771.08
  4. Step 4: Simplify right side
    21,480.74x = 411,482,154.23
  5. Step 5: Solve for x
    x = 411,482,154.23/21,480.74
  6. Step 6: Final answer
    x = 19,155.86

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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.