Home / 21,220,005.70-29,283,608.13-11,562,213.70

Finding the Fourth Proportional to 21,220,005.70, 29,283,608.13 and 11,562,213.70

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Solution

The fourth proportional to 21,220,005.70, 29,283,608.13 and 11,562,213.70 is: 15,955,855.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220,005.70 : 29,283,608.13 = 11,562,213.70 : x
  2. Step 2: Convert to fraction form
    21,220,005.70/29,283,608.13 = 11,562,213.70/x
  3. Step 3: Cross multiply
    21,220,005.70x = 29,283,608.13 × 11,562,213.70
  4. Step 4: Simplify right side
    21,220,005.70x = 338,583,335,106,117.38
  5. Step 5: Solve for x
    x = 338,583,335,106,117.38/21,220,005.70
  6. Step 6: Final answer
    x = 15,955,855.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.