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Finding the Fourth Proportional to 15,880, 21,915.01 and 8,806.27

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Solution

The fourth proportional to 15,880, 21,915.01 and 8,806.27 is: 12,152.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880 : 21,915.01 = 8,806.27 : x
  2. Step 2: Convert to fraction form
    15,880/21,915.01 = 8,806.27/x
  3. Step 3: Cross multiply
    15,880x = 21,915.01 × 8,806.27
  4. Step 4: Simplify right side
    15,880x = 192,989,495.11
  5. Step 5: Solve for x
    x = 192,989,495.11/15,880
  6. Step 6: Final answer
    x = 12,152.99

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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.