Home / 12,949,054.80-17,869,699.20-7,147,840.32

Finding the Fourth Proportional to 12,949,054.80, 17,869,699.20 and 7,147,840.32

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Solution

The fourth proportional to 12,949,054.80, 17,869,699.20 and 7,147,840.32 is: 9,864,021.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949,054.80 : 17,869,699.20 = 7,147,840.32 : x
  2. Step 2: Convert to fraction form
    12,949,054.80/17,869,699.20 = 7,147,840.32/x
  3. Step 3: Cross multiply
    12,949,054.80x = 17,869,699.20 × 7,147,840.32
  4. Step 4: Simplify right side
    12,949,054.80x = 127,729,756,448,031.75
  5. Step 5: Solve for x
    x = 127,729,756,448,031.75/12,949,054.80
  6. Step 6: Final answer
    x = 9,864,021.62

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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.