Home / 15,286.20-22,942.80-9,038.40

Finding the Fourth Proportional to 15,286.20, 22,942.80 and 9,038.40

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Solution

The fourth proportional to 15,286.20, 22,942.80 and 9,038.40 is: 13,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.20 : 22,942.80 = 9,038.40 : x
  2. Step 2: Convert to fraction form
    15,286.20/22,942.80 = 9,038.40/x
  3. Step 3: Cross multiply
    15,286.20x = 22,942.80 × 9,038.40
  4. Step 4: Simplify right side
    15,286.20x = 207,366,203.52
  5. Step 5: Solve for x
    x = 207,366,203.52/15,286.20
  6. Step 6: Final answer
    x = 13,565.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.