Home / 21,398,831.30-29,533,172.80-11,983,208.36

Finding the Fourth Proportional to 21,398,831.30, 29,533,172.80 and 11,983,208.36

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Solution

The fourth proportional to 21,398,831.30, 29,533,172.80 and 11,983,208.36 is: 16,538,387.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398,831.30 : 29,533,172.80 = 11,983,208.36 : x
  2. Step 2: Convert to fraction form
    21,398,831.30/29,533,172.80 = 11,983,208.36/x
  3. Step 3: Cross multiply
    21,398,831.30x = 29,533,172.80 × 11,983,208.36
  4. Step 4: Simplify right side
    21,398,831.30x = 353,902,163,238,159.56
  5. Step 5: Solve for x
    x = 353,902,163,238,159.56/21,398,831.30
  6. Step 6: Final answer
    x = 16,538,387.46

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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.