Home / 15,022.42-20,730.10-8,307.60

Finding the Fourth Proportional to 15,022.42, 20,730.10 and 8,307.60

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Solution

The fourth proportional to 15,022.42, 20,730.10 and 8,307.60 is: 11,464.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.42 : 20,730.10 = 8,307.60 : x
  2. Step 2: Convert to fraction form
    15,022.42/20,730.10 = 8,307.60/x
  3. Step 3: Cross multiply
    15,022.42x = 20,730.10 × 8,307.60
  4. Step 4: Simplify right side
    15,022.42x = 172,217,378.76
  5. Step 5: Solve for x
    x = 172,217,378.76/15,022.42
  6. Step 6: Final answer
    x = 11,464.02

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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.