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Finding the Fourth Proportional to 19,137.60, 28,700.73 and 6,657.12

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Solution

The fourth proportional to 19,137.60, 28,700.73 and 6,657.12 is: 9,983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.60 : 28,700.73 = 6,657.12 : x
  2. Step 2: Convert to fraction form
    19,137.60/28,700.73 = 6,657.12/x
  3. Step 3: Cross multiply
    19,137.60x = 28,700.73 × 6,657.12
  4. Step 4: Simplify right side
    19,137.60x = 191,064,203.70
  5. Step 5: Solve for x
    x = 191,064,203.70/19,137.60
  6. Step 6: Final answer
    x = 9,983.71

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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.