Home / 20,790,180.72-31,163,280-7,830,724.04

Finding the Fourth Proportional to 20,790,180.72, 31,163,280 and 7,830,724.04

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Solution

The fourth proportional to 20,790,180.72, 31,163,280 and 7,830,724.04 is: 11,737,803.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,180.72 : 31,163,280 = 7,830,724.04 : x
  2. Step 2: Convert to fraction form
    20,790,180.72/31,163,280 = 7,830,724.04/x
  3. Step 3: Cross multiply
    20,790,180.72x = 31,163,280 × 7,830,724.04
  4. Step 4: Simplify right side
    20,790,180.72x = 244,031,045,861,251.19
  5. Step 5: Solve for x
    x = 244,031,045,861,251.19/20,790,180.72
  6. Step 6: Final answer
    x = 11,737,803.01

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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.