Home / 15,129,940.64-20,878,467.19-8,605,157.36

Finding the Fourth Proportional to 15,129,940.64, 20,878,467.19 and 8,605,157.36

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Solution

The fourth proportional to 15,129,940.64, 20,878,467.19 and 8,605,157.36 is: 11,874,633.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129,940.64 : 20,878,467.19 = 8,605,157.36 : x
  2. Step 2: Convert to fraction form
    15,129,940.64/20,878,467.19 = 8,605,157.36/x
  3. Step 3: Cross multiply
    15,129,940.64x = 20,878,467.19 × 8,605,157.36
  4. Step 4: Simplify right side
    15,129,940.64x = 179,662,495,479,641.81
  5. Step 5: Solve for x
    x = 179,662,495,479,641.81/15,129,940.64
  6. Step 6: Final answer
    x = 11,874,633.21

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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.