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Finding the Fourth Proportional to 13,136.64, 19,712.64 and 13,031.04

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Solution

The fourth proportional to 13,136.64, 19,712.64 and 13,031.04 is: 19,554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.64 : 19,712.64 = 13,031.04 : x
  2. Step 2: Convert to fraction form
    13,136.64/19,712.64 = 13,031.04/x
  3. Step 3: Cross multiply
    13,136.64x = 19,712.64 × 13,031.04
  4. Step 4: Simplify right side
    13,136.64x = 256,876,200.35
  5. Step 5: Solve for x
    x = 256,876,200.35/13,136.64
  6. Step 6: Final answer
    x = 19,554.18

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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.