Home / 15,022.19-20,730.53-8,307.70

Finding the Fourth Proportional to 15,022.19, 20,730.53 and 8,307.70

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Solution

The fourth proportional to 15,022.19, 20,730.53 and 8,307.70 is: 11,464.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.19 : 20,730.53 = 8,307.70 : x
  2. Step 2: Convert to fraction form
    15,022.19/20,730.53 = 8,307.70/x
  3. Step 3: Cross multiply
    15,022.19x = 20,730.53 × 8,307.70
  4. Step 4: Simplify right side
    15,022.19x = 172,222,993.02
  5. Step 5: Solve for x
    x = 172,222,993.02/15,022.19
  6. Step 6: Final answer
    x = 11,464.57

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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.