Home / 12,690.15-19,042.02-5,299.67

Finding the Fourth Proportional to 12,690.15, 19,042.02 and 5,299.67

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Solution

The fourth proportional to 12,690.15, 19,042.02 and 5,299.67 is: 7,952.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.15 : 19,042.02 = 5,299.67 : x
  2. Step 2: Convert to fraction form
    12,690.15/19,042.02 = 5,299.67/x
  3. Step 3: Cross multiply
    12,690.15x = 19,042.02 × 5,299.67
  4. Step 4: Simplify right side
    12,690.15x = 100,916,326.92
  5. Step 5: Solve for x
    x = 100,916,326.92/12,690.15
  6. Step 6: Final answer
    x = 7,952.34

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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.