Home / 12,810.08-19,227.12-7,889.34

Finding the Fourth Proportional to 12,810.08, 19,227.12 and 7,889.34

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Solution

The fourth proportional to 12,810.08, 19,227.12 and 7,889.34 is: 11,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.08 : 19,227.12 = 7,889.34 : x
  2. Step 2: Convert to fraction form
    12,810.08/19,227.12 = 7,889.34/x
  3. Step 3: Cross multiply
    12,810.08x = 19,227.12 × 7,889.34
  4. Step 4: Simplify right side
    12,810.08x = 151,689,286.90
  5. Step 5: Solve for x
    x = 151,689,286.90/12,810.08
  6. Step 6: Final answer
    x = 11,841.40

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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.