Home / 15,653.69-21,601.29-8,578.75

Finding the Fourth Proportional to 15,653.69, 21,601.29 and 8,578.75

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Solution

The fourth proportional to 15,653.69, 21,601.29 and 8,578.75 is: 11,838.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.69 : 21,601.29 = 8,578.75 : x
  2. Step 2: Convert to fraction form
    15,653.69/21,601.29 = 8,578.75/x
  3. Step 3: Cross multiply
    15,653.69x = 21,601.29 × 8,578.75
  4. Step 4: Simplify right side
    15,653.69x = 185,312,044.75
  5. Step 5: Solve for x
    x = 185,312,044.75/15,653.69
  6. Step 6: Final answer
    x = 11,838.23

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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.