Home / 28,216.22-38,941.12-15,644.06

Finding the Fourth Proportional to 28,216.22, 38,941.12 and 15,644.06

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Solution

The fourth proportional to 28,216.22, 38,941.12 and 15,644.06 is: 21,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.22 : 38,941.12 = 15,644.06 : x
  2. Step 2: Convert to fraction form
    28,216.22/38,941.12 = 15,644.06/x
  3. Step 3: Cross multiply
    28,216.22x = 38,941.12 × 15,644.06
  4. Step 4: Simplify right side
    28,216.22x = 609,197,217.75
  5. Step 5: Solve for x
    x = 609,197,217.75/28,216.22
  6. Step 6: Final answer
    x = 21,590.32

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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.