Home / 28,656.90-39,544.54-15,909.08

Finding the Fourth Proportional to 28,656.90, 39,544.54 and 15,909.08

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Solution

The fourth proportional to 28,656.90, 39,544.54 and 15,909.08 is: 21,953.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.90 : 39,544.54 = 15,909.08 : x
  2. Step 2: Convert to fraction form
    28,656.90/39,544.54 = 15,909.08/x
  3. Step 3: Cross multiply
    28,656.90x = 39,544.54 × 15,909.08
  4. Step 4: Simplify right side
    28,656.90x = 629,117,250.42
  5. Step 5: Solve for x
    x = 629,117,250.42/28,656.90
  6. Step 6: Final answer
    x = 21,953.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.