Home / 21,685.32-32,496.75-12,779.64

Finding the Fourth Proportional to 21,685.32, 32,496.75 and 12,779.64

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Solution

The fourth proportional to 21,685.32, 32,496.75 and 12,779.64 is: 19,151.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.32 : 32,496.75 = 12,779.64 : x
  2. Step 2: Convert to fraction form
    21,685.32/32,496.75 = 12,779.64/x
  3. Step 3: Cross multiply
    21,685.32x = 32,496.75 × 12,779.64
  4. Step 4: Simplify right side
    21,685.32x = 415,296,766.17
  5. Step 5: Solve for x
    x = 415,296,766.17/21,685.32
  6. Step 6: Final answer
    x = 19,151.06

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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.