Home / 20,885,683.63-31,328,482.05-11,783,649.25

Finding the Fourth Proportional to 20,885,683.63, 31,328,482.05 and 11,783,649.25

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Solution

The fourth proportional to 20,885,683.63, 31,328,482.05 and 11,783,649.25 is: 17,675,449.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,683.63 : 31,328,482.05 = 11,783,649.25 : x
  2. Step 2: Convert to fraction form
    20,885,683.63/31,328,482.05 = 11,783,649.25/x
  3. Step 3: Cross multiply
    20,885,683.63x = 31,328,482.05 × 11,783,649.25
  4. Step 4: Simplify right side
    20,885,683.63x = 369,163,844,012,121
  5. Step 5: Solve for x
    x = 369,163,844,012,121/20,885,683.63
  6. Step 6: Final answer
    x = 17,675,449.39

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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.