Home / 21,920,980.84-30,251,011-12,132,100.06

Finding the Fourth Proportional to 21,920,980.84, 30,251,011 and 12,132,100.06

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Solution

The fourth proportional to 21,920,980.84, 30,251,011 and 12,132,100.06 is: 16,742,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920,980.84 : 30,251,011 = 12,132,100.06 : x
  2. Step 2: Convert to fraction form
    21,920,980.84/30,251,011 = 12,132,100.06/x
  3. Step 3: Cross multiply
    21,920,980.84x = 30,251,011 × 12,132,100.06
  4. Step 4: Simplify right side
    21,920,980.84x = 367,008,292,368,160.69
  5. Step 5: Solve for x
    x = 367,008,292,368,160.69/21,920,980.84
  6. Step 6: Final answer
    x = 16,742,329.87

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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.