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Finding the Fourth Proportional to 12,672.90, 19,009.35 and 12,500.10

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Solution

The fourth proportional to 12,672.90, 19,009.35 and 12,500.10 is: 18,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.90 : 19,009.35 = 12,500.10 : x
  2. Step 2: Convert to fraction form
    12,672.90/19,009.35 = 12,500.10/x
  3. Step 3: Cross multiply
    12,672.90x = 19,009.35 × 12,500.10
  4. Step 4: Simplify right side
    12,672.90x = 237,618,775.94
  5. Step 5: Solve for x
    x = 237,618,775.94/12,672.90
  6. Step 6: Final answer
    x = 18,750.15

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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.