Home / 15,880.23-21,915.72-9,166.14

Finding the Fourth Proportional to 15,880.23, 21,915.72 and 9,166.14

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Solution

The fourth proportional to 15,880.23, 21,915.72 and 9,166.14 is: 12,649.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.23 : 21,915.72 = 9,166.14 : x
  2. Step 2: Convert to fraction form
    15,880.23/21,915.72 = 9,166.14/x
  3. Step 3: Cross multiply
    15,880.23x = 21,915.72 × 9,166.14
  4. Step 4: Simplify right side
    15,880.23x = 200,882,557.72
  5. Step 5: Solve for x
    x = 200,882,557.72/15,880.23
  6. Step 6: Final answer
    x = 12,649.85

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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.