Home / 28,209.12-38,928.36-15,462.35

Finding the Fourth Proportional to 28,209.12, 38,928.36 and 15,462.35

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Solution

The fourth proportional to 28,209.12, 38,928.36 and 15,462.35 is: 21,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.12 : 38,928.36 = 15,462.35 : x
  2. Step 2: Convert to fraction form
    28,209.12/38,928.36 = 15,462.35/x
  3. Step 3: Cross multiply
    28,209.12x = 38,928.36 × 15,462.35
  4. Step 4: Simplify right side
    28,209.12x = 601,923,927.25
  5. Step 5: Solve for x
    x = 601,923,927.25/28,209.12
  6. Step 6: Final answer
    x = 21,337.92

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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.