Home / 20,616,875.70-30,889,592.24-12,512,870.65

Finding the Fourth Proportional to 20,616,875.70, 30,889,592.24 and 12,512,870.65

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Solution

The fourth proportional to 20,616,875.70, 30,889,592.24 and 12,512,870.65 is: 18,747,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616,875.70 : 30,889,592.24 = 12,512,870.65 : x
  2. Step 2: Convert to fraction form
    20,616,875.70/30,889,592.24 = 12,512,870.65/x
  3. Step 3: Cross multiply
    20,616,875.70x = 30,889,592.24 × 12,512,870.65
  4. Step 4: Simplify right side
    20,616,875.70x = 386,517,472,106,411.38
  5. Step 5: Solve for x
    x = 386,517,472,106,411.38/20,616,875.70
  6. Step 6: Final answer
    x = 18,747,625.87

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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.