Home / 28,020.25-38,667.95-15,445.27

Finding the Fourth Proportional to 28,020.25, 38,667.95 and 15,445.27

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Solution

The fourth proportional to 28,020.25, 38,667.95 and 15,445.27 is: 21,314.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.25 : 38,667.95 = 15,445.27 : x
  2. Step 2: Convert to fraction form
    28,020.25/38,667.95 = 15,445.27/x
  3. Step 3: Cross multiply
    28,020.25x = 38,667.95 × 15,445.27
  4. Step 4: Simplify right side
    28,020.25x = 597,236,928.10
  5. Step 5: Solve for x
    x = 597,236,928.10/28,020.25
  6. Step 6: Final answer
    x = 21,314.48

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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.