Home / 21,291,205.80-31,936,808.70-11,701,648.20

Finding the Fourth Proportional to 21,291,205.80, 31,936,808.70 and 11,701,648.20

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Solution

The fourth proportional to 21,291,205.80, 31,936,808.70 and 11,701,648.20 is: 17,552,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,205.80 : 31,936,808.70 = 11,701,648.20 : x
  2. Step 2: Convert to fraction form
    21,291,205.80/31,936,808.70 = 11,701,648.20/x
  3. Step 3: Cross multiply
    21,291,205.80x = 31,936,808.70 × 11,701,648.20
  4. Step 4: Simplify right side
    21,291,205.80x = 373,713,300,038,099.31
  5. Step 5: Solve for x
    x = 373,713,300,038,099.31/21,291,205.80
  6. Step 6: Final answer
    x = 17,552,472.30

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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.