Home / 21,390,557.85-29,522,743.06-12,693,525.88

Finding the Fourth Proportional to 21,390,557.85, 29,522,743.06 and 12,693,525.88

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Solution

The fourth proportional to 21,390,557.85, 29,522,743.06 and 12,693,525.88 is: 17,519,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390,557.85 : 29,522,743.06 = 12,693,525.88 : x
  2. Step 2: Convert to fraction form
    21,390,557.85/29,522,743.06 = 12,693,525.88/x
  3. Step 3: Cross multiply
    21,390,557.85x = 29,522,743.06 × 12,693,525.88
  4. Step 4: Simplify right side
    21,390,557.85x = 374,747,703,017,232.81
  5. Step 5: Solve for x
    x = 374,747,703,017,232.81/21,390,557.85
  6. Step 6: Final answer
    x = 17,519,304.81

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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.