Home / 12,981,745.17-17,913,606.12-7,180,402.05

Finding the Fourth Proportional to 12,981,745.17, 17,913,606.12 and 7,180,402.05

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Solution

The fourth proportional to 12,981,745.17, 17,913,606.12 and 7,180,402.05 is: 9,908,289.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981,745.17 : 17,913,606.12 = 7,180,402.05 : x
  2. Step 2: Convert to fraction form
    12,981,745.17/17,913,606.12 = 7,180,402.05/x
  3. Step 3: Cross multiply
    12,981,745.17x = 17,913,606.12 × 7,180,402.05
  4. Step 4: Simplify right side
    12,981,745.17x = 128,626,894,106,940.55
  5. Step 5: Solve for x
    x = 128,626,894,106,940.55/12,981,745.17
  6. Step 6: Final answer
    x = 9,908,289.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.