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Finding the Fourth Proportional to 19,710.75, 27,200.88 and 12,646.74

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Solution

The fourth proportional to 19,710.75, 27,200.88 and 12,646.74 is: 17,452.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,710.75 : 27,200.88 = 12,646.74 : x
  2. Step 2: Convert to fraction form
    19,710.75/27,200.88 = 12,646.74/x
  3. Step 3: Cross multiply
    19,710.75x = 27,200.88 × 12,646.74
  4. Step 4: Simplify right side
    19,710.75x = 344,002,457.13
  5. Step 5: Solve for x
    x = 344,002,457.13/19,710.75
  6. Step 6: Final answer
    x = 17,452.53

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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.