Home / 21,020,257.84-29,017,720.92-12,317,222.56

Finding the Fourth Proportional to 21,020,257.84, 29,017,720.92 and 12,317,222.56

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Solution

The fourth proportional to 21,020,257.84, 29,017,720.92 and 12,317,222.56 is: 17,003,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,257.84 : 29,017,720.92 = 12,317,222.56 : x
  2. Step 2: Convert to fraction form
    21,020,257.84/29,017,720.92 = 12,317,222.56/x
  3. Step 3: Cross multiply
    21,020,257.84x = 29,017,720.92 × 12,317,222.56
  4. Step 4: Simplify right side
    21,020,257.84x = 357,417,726,755,608
  5. Step 5: Solve for x
    x = 357,417,726,755,608/21,020,257.84
  6. Step 6: Final answer
    x = 17,003,489.18

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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.