Home / 21,301,358.40-31,933,375.20-12,772,641.60

Finding the Fourth Proportional to 21,301,358.40, 31,933,375.20 and 12,772,641.60

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Solution

The fourth proportional to 21,301,358.40, 31,933,375.20 and 12,772,641.60 is: 19,147,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301,358.40 : 31,933,375.20 = 12,772,641.60 : x
  2. Step 2: Convert to fraction form
    21,301,358.40/31,933,375.20 = 12,772,641.60/x
  3. Step 3: Cross multiply
    21,301,358.40x = 31,933,375.20 × 12,772,641.60
  4. Step 4: Simplify right side
    21,301,358.40x = 407,873,556,507,928.31
  5. Step 5: Solve for x
    x = 407,873,556,507,928.31/21,301,358.40
  6. Step 6: Final answer
    x = 19,147,772.12

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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.