Home / 15,023.15-20,730.15-8,307.86

Finding the Fourth Proportional to 15,023.15, 20,730.15 and 8,307.86

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Solution

The fourth proportional to 15,023.15, 20,730.15 and 8,307.86 is: 11,463.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.15 : 20,730.15 = 8,307.86 : x
  2. Step 2: Convert to fraction form
    15,023.15/20,730.15 = 8,307.86/x
  3. Step 3: Cross multiply
    15,023.15x = 20,730.15 × 8,307.86
  4. Step 4: Simplify right side
    15,023.15x = 172,223,204.65
  5. Step 5: Solve for x
    x = 172,223,204.65/15,023.15
  6. Step 6: Final answer
    x = 11,463.86

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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.