Home / 28,213.26-38,934.18-15,638.01

Finding the Fourth Proportional to 28,213.26, 38,934.18 and 15,638.01

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Solution

The fourth proportional to 28,213.26, 38,934.18 and 15,638.01 is: 21,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.26 : 38,934.18 = 15,638.01 : x
  2. Step 2: Convert to fraction form
    28,213.26/38,934.18 = 15,638.01/x
  3. Step 3: Cross multiply
    28,213.26x = 38,934.18 × 15,638.01
  4. Step 4: Simplify right side
    28,213.26x = 608,853,096.18
  5. Step 5: Solve for x
    x = 608,853,096.18/28,213.26
  6. Step 6: Final answer
    x = 21,580.39

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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.