Home / 15,880.51-21,915.09-8,806.93

Finding the Fourth Proportional to 15,880.51, 21,915.09 and 8,806.93

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Solution

The fourth proportional to 15,880.51, 21,915.09 and 8,806.93 is: 12,153.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.51 : 21,915.09 = 8,806.93 : x
  2. Step 2: Convert to fraction form
    15,880.51/21,915.09 = 8,806.93/x
  3. Step 3: Cross multiply
    15,880.51x = 21,915.09 × 8,806.93
  4. Step 4: Simplify right side
    15,880.51x = 193,004,608.79
  5. Step 5: Solve for x
    x = 193,004,608.79/15,880.51
  6. Step 6: Final answer
    x = 12,153.56

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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.