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Finding the Fourth Proportional to 12,700.20, 19,050.30 and 11,164.20

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Solution

The fourth proportional to 12,700.20, 19,050.30 and 11,164.20 is: 16,746.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.20 : 19,050.30 = 11,164.20 : x
  2. Step 2: Convert to fraction form
    12,700.20/19,050.30 = 11,164.20/x
  3. Step 3: Cross multiply
    12,700.20x = 19,050.30 × 11,164.20
  4. Step 4: Simplify right side
    12,700.20x = 212,681,359.26
  5. Step 5: Solve for x
    x = 212,681,359.26/12,700.20
  6. Step 6: Final answer
    x = 16,746.30

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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.