Home / 20,885,675.81-31,328,470.58-11,783,641.50

Finding the Fourth Proportional to 20,885,675.81, 31,328,470.58 and 11,783,641.50

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Solution

The fourth proportional to 20,885,675.81, 31,328,470.58 and 11,783,641.50 is: 17,675,437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,675.81 : 31,328,470.58 = 11,783,641.50 : x
  2. Step 2: Convert to fraction form
    20,885,675.81/31,328,470.58 = 11,783,641.50/x
  3. Step 3: Cross multiply
    20,885,675.81x = 31,328,470.58 × 11,783,641.50
  4. Step 4: Simplify right side
    20,885,675.81x = 369,163,465,999,098.88
  5. Step 5: Solve for x
    x = 369,163,465,999,098.88/20,885,675.81
  6. Step 6: Final answer
    x = 17,675,437.91

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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.