Home / 15,389,393.01-21,237,383.02-8,420,725.28

Finding the Fourth Proportional to 15,389,393.01, 21,237,383.02 and 8,420,725.28

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Solution

The fourth proportional to 15,389,393.01, 21,237,383.02 and 8,420,725.28 is: 11,620,612.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389,393.01 : 21,237,383.02 = 8,420,725.28 : x
  2. Step 2: Convert to fraction form
    15,389,393.01/21,237,383.02 = 8,420,725.28/x
  3. Step 3: Cross multiply
    15,389,393.01x = 21,237,383.02 × 8,420,725.28
  4. Step 4: Simplify right side
    15,389,393.01x = 178,834,167,971,369.84
  5. Step 5: Solve for x
    x = 178,834,167,971,369.84/15,389,393.01
  6. Step 6: Final answer
    x = 11,620,612.19

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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.