Home / 15,653.90-21,603.21-8,580.62

Finding the Fourth Proportional to 15,653.90, 21,603.21 and 8,580.62

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Solution

The fourth proportional to 15,653.90, 21,603.21 and 8,580.62 is: 11,841.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.90 : 21,603.21 = 8,580.62 : x
  2. Step 2: Convert to fraction form
    15,653.90/21,603.21 = 8,580.62/x
  3. Step 3: Cross multiply
    15,653.90x = 21,603.21 × 8,580.62
  4. Step 4: Simplify right side
    15,653.90x = 185,368,935.79
  5. Step 5: Solve for x
    x = 185,368,935.79/15,653.90
  6. Step 6: Final answer
    x = 11,841.71

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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.