Home / 15,631.62-21,569.63-8,916.85

Finding the Fourth Proportional to 15,631.62, 21,569.63 and 8,916.85

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Solution

The fourth proportional to 15,631.62, 21,569.63 and 8,916.85 is: 12,304.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.62 : 21,569.63 = 8,916.85 : x
  2. Step 2: Convert to fraction form
    15,631.62/21,569.63 = 8,916.85/x
  3. Step 3: Cross multiply
    15,631.62x = 21,569.63 × 8,916.85
  4. Step 4: Simplify right side
    15,631.62x = 192,333,212.88
  5. Step 5: Solve for x
    x = 192,333,212.88/15,631.62
  6. Step 6: Final answer
    x = 12,304.11

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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.