Home / 15,020.93-20,730.17-8,307.20

Finding the Fourth Proportional to 15,020.93, 20,730.17 and 8,307.20

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Solution

The fourth proportional to 15,020.93, 20,730.17 and 8,307.20 is: 11,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.93 : 20,730.17 = 8,307.20 : x
  2. Step 2: Convert to fraction form
    15,020.93/20,730.17 = 8,307.20/x
  3. Step 3: Cross multiply
    15,020.93x = 20,730.17 × 8,307.20
  4. Step 4: Simplify right side
    15,020.93x = 172,209,668.22
  5. Step 5: Solve for x
    x = 172,209,668.22/15,020.93
  6. Step 6: Final answer
    x = 11,464.65

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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.