Home / 15,117.78-20,864.26-8,404.07

Finding the Fourth Proportional to 15,117.78, 20,864.26 and 8,404.07

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Solution

The fourth proportional to 15,117.78, 20,864.26 and 8,404.07 is: 11,598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.78 : 20,864.26 = 8,404.07 : x
  2. Step 2: Convert to fraction form
    15,117.78/20,864.26 = 8,404.07/x
  3. Step 3: Cross multiply
    15,117.78x = 20,864.26 × 8,404.07
  4. Step 4: Simplify right side
    15,117.78x = 175,344,732.69
  5. Step 5: Solve for x
    x = 175,344,732.69/15,117.78
  6. Step 6: Final answer
    x = 11,598.58

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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.