Home / 17,136.91-23,656.08-12,420.28

Finding the Fourth Proportional to 17,136.91, 23,656.08 and 12,420.28

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Solution

The fourth proportional to 17,136.91, 23,656.08 and 12,420.28 is: 17,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,136.91 : 23,656.08 = 12,420.28 : x
  2. Step 2: Convert to fraction form
    17,136.91/23,656.08 = 12,420.28/x
  3. Step 3: Cross multiply
    17,136.91x = 23,656.08 × 12,420.28
  4. Step 4: Simplify right side
    17,136.91x = 293,815,137.30
  5. Step 5: Solve for x
    x = 293,815,137.30/17,136.91
  6. Step 6: Final answer
    x = 17,145.16

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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.