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Finding the Fourth Proportional to 9,915.53, 14,844.07 and 8,685.34

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Solution

The fourth proportional to 9,915.53, 14,844.07 and 8,685.34 is: 13,002.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.53 : 14,844.07 = 8,685.34 : x
  2. Step 2: Convert to fraction form
    9,915.53/14,844.07 = 8,685.34/x
  3. Step 3: Cross multiply
    9,915.53x = 14,844.07 × 8,685.34
  4. Step 4: Simplify right side
    9,915.53x = 128,925,794.93
  5. Step 5: Solve for x
    x = 128,925,794.93/9,915.53
  6. Step 6: Final answer
    x = 13,002.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.