Home / 21,261,781.23-31,905,049.80-8,964,973.25

Finding the Fourth Proportional to 21,261,781.23, 31,905,049.80 and 8,964,973.25

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Solution

The fourth proportional to 21,261,781.23, 31,905,049.80 and 8,964,973.25 is: 13,452,679.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261,781.23 : 31,905,049.80 = 8,964,973.25 : x
  2. Step 2: Convert to fraction form
    21,261,781.23/31,905,049.80 = 8,964,973.25/x
  3. Step 3: Cross multiply
    21,261,781.23x = 31,905,049.80 × 8,964,973.25
  4. Step 4: Simplify right side
    21,261,781.23x = 286,027,917,990,655.19
  5. Step 5: Solve for x
    x = 286,027,917,990,655.19/21,261,781.23
  6. Step 6: Final answer
    x = 13,452,679.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.