Home / 28,209.43-38,928.81-15,462.55

Finding the Fourth Proportional to 28,209.43, 38,928.81 and 15,462.55

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Solution

The fourth proportional to 28,209.43, 38,928.81 and 15,462.55 is: 21,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.43 : 38,928.81 = 15,462.55 : x
  2. Step 2: Convert to fraction form
    28,209.43/38,928.81 = 15,462.55/x
  3. Step 3: Cross multiply
    28,209.43x = 38,928.81 × 15,462.55
  4. Step 4: Simplify right side
    28,209.43x = 601,938,671.07
  5. Step 5: Solve for x
    x = 601,938,671.07/28,209.43
  6. Step 6: Final answer
    x = 21,338.21

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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.