Home / 20,774,971.13-31,162,899.56-7,128,058.32

Finding the Fourth Proportional to 20,774,971.13, 31,162,899.56 and 7,128,058.32

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Solution

The fourth proportional to 20,774,971.13, 31,162,899.56 and 7,128,058.32 is: 10,692,239.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774,971.13 : 31,162,899.56 = 7,128,058.32 : x
  2. Step 2: Convert to fraction form
    20,774,971.13/31,162,899.56 = 7,128,058.32/x
  3. Step 3: Cross multiply
    20,774,971.13x = 31,162,899.56 × 7,128,058.32
  4. Step 4: Simplify right side
    20,774,971.13x = 222,130,965,448,342.06
  5. Step 5: Solve for x
    x = 222,130,965,448,342.06/20,774,971.13
  6. Step 6: Final answer
    x = 10,692,239.43

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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.