Home / 20,885,677.81-31,328,473.57-11,783,643.50

Finding the Fourth Proportional to 20,885,677.81, 31,328,473.57 and 11,783,643.50

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Solution

The fourth proportional to 20,885,677.81, 31,328,473.57 and 11,783,643.50 is: 17,675,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,677.81 : 31,328,473.57 = 11,783,643.50 : x
  2. Step 2: Convert to fraction form
    20,885,677.81/31,328,473.57 = 11,783,643.50/x
  3. Step 3: Cross multiply
    20,885,677.81x = 31,328,473.57 × 11,783,643.50
  4. Step 4: Simplify right side
    20,885,677.81x = 369,163,563,948,052.31
  5. Step 5: Solve for x
    x = 369,163,563,948,052.31/20,885,677.81
  6. Step 6: Final answer
    x = 17,675,440.91

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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.