Home / 20,732,362.92-28,621,018.98-12,894,401.57

Finding the Fourth Proportional to 20,732,362.92, 28,621,018.98 and 12,894,401.57

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Solution

The fourth proportional to 20,732,362.92, 28,621,018.98 and 12,894,401.57 is: 17,800,716.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732,362.92 : 28,621,018.98 = 12,894,401.57 : x
  2. Step 2: Convert to fraction form
    20,732,362.92/28,621,018.98 = 12,894,401.57/x
  3. Step 3: Cross multiply
    20,732,362.92x = 28,621,018.98 × 12,894,401.57
  4. Step 4: Simplify right side
    20,732,362.92x = 369,050,911,927,606.69
  5. Step 5: Solve for x
    x = 369,050,911,927,606.69/20,732,362.92
  6. Step 6: Final answer
    x = 17,800,716.37

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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.