Home / 21,047,705-29,045,832.90-11,389,913

Finding the Fourth Proportional to 21,047,705, 29,045,832.90 and 11,389,913

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Solution

The fourth proportional to 21,047,705, 29,045,832.90 and 11,389,913 is: 15,718,079.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,705 : 29,045,832.90 = 11,389,913 : x
  2. Step 2: Convert to fraction form
    21,047,705/29,045,832.90 = 11,389,913/x
  3. Step 3: Cross multiply
    21,047,705x = 29,045,832.90 × 11,389,913
  4. Step 4: Simplify right side
    21,047,705x = 330,829,509,743,537.69
  5. Step 5: Solve for x
    x = 330,829,509,743,537.69/21,047,705
  6. Step 6: Final answer
    x = 15,718,079.94

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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.