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Finding the Fourth Proportional to 13,704.53, 20,547.07 and 5,915.57

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Solution

The fourth proportional to 13,704.53, 20,547.07 and 5,915.57 is: 8,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.53 : 20,547.07 = 5,915.57 : x
  2. Step 2: Convert to fraction form
    13,704.53/20,547.07 = 5,915.57/x
  3. Step 3: Cross multiply
    13,704.53x = 20,547.07 × 5,915.57
  4. Step 4: Simplify right side
    13,704.53x = 121,547,513.36
  5. Step 5: Solve for x
    x = 121,547,513.36/13,704.53
  6. Step 6: Final answer
    x = 8,869.15

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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.