Home / 20,739,772.07-31,111,152.78-7,960,276.77

Finding the Fourth Proportional to 20,739,772.07, 31,111,152.78 and 7,960,276.77

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Solution

The fourth proportional to 20,739,772.07, 31,111,152.78 and 7,960,276.77 is: 11,940,988.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,772.07 : 31,111,152.78 = 7,960,276.77 : x
  2. Step 2: Convert to fraction form
    20,739,772.07/31,111,152.78 = 7,960,276.77/x
  3. Step 3: Cross multiply
    20,739,772.07x = 31,111,152.78 × 7,960,276.77
  4. Step 4: Simplify right side
    20,739,772.07x = 247,653,386,762,554.91
  5. Step 5: Solve for x
    x = 247,653,386,762,554.91/20,739,772.07
  6. Step 6: Final answer
    x = 11,940,988.84

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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.