Home / 15,020.89-20,730.14-8,307.61

Finding the Fourth Proportional to 15,020.89, 20,730.14 and 8,307.61

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Solution

The fourth proportional to 15,020.89, 20,730.14 and 8,307.61 is: 11,465.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.89 : 20,730.14 = 8,307.61 : x
  2. Step 2: Convert to fraction form
    15,020.89/20,730.14 = 8,307.61/x
  3. Step 3: Cross multiply
    15,020.89x = 20,730.14 × 8,307.61
  4. Step 4: Simplify right side
    15,020.89x = 172,217,918.37
  5. Step 5: Solve for x
    x = 172,217,918.37/15,020.89
  6. Step 6: Final answer
    x = 11,465.23

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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.