Home / 21,290,022.36-31,935,030-5,115,973.56

Finding the Fourth Proportional to 21,290,022.36, 31,935,030 and 5,115,973.56

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Solution

The fourth proportional to 21,290,022.36, 31,935,030 and 5,115,973.56 is: 7,673,959.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290,022.36 : 31,935,030 = 5,115,973.56 : x
  2. Step 2: Convert to fraction form
    21,290,022.36/31,935,030 = 5,115,973.56/x
  3. Step 3: Cross multiply
    21,290,022.36x = 31,935,030 × 5,115,973.56
  4. Step 4: Simplify right side
    21,290,022.36x = 163,378,769,117,806.78
  5. Step 5: Solve for x
    x = 163,378,769,117,806.78/21,290,022.36
  6. Step 6: Final answer
    x = 7,673,959.49

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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.