Home / 21,009,455.93-28,995,278.20-12,314,933.55

Finding the Fourth Proportional to 21,009,455.93, 28,995,278.20 and 12,314,933.55

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Solution

The fourth proportional to 21,009,455.93, 28,995,278.20 and 12,314,933.55 is: 16,995,914.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009,455.93 : 28,995,278.20 = 12,314,933.55 : x
  2. Step 2: Convert to fraction form
    21,009,455.93/28,995,278.20 = 12,314,933.55/x
  3. Step 3: Cross multiply
    21,009,455.93x = 28,995,278.20 × 12,314,933.55
  4. Step 4: Simplify right side
    21,009,455.93x = 357,074,924,265,976.31
  5. Step 5: Solve for x
    x = 357,074,924,265,976.31/21,009,455.93
  6. Step 6: Final answer
    x = 16,995,914.86

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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.