Home / 21,976,509.90-30,327,009.21-12,186,929.28

Finding the Fourth Proportional to 21,976,509.90, 30,327,009.21 and 12,186,929.28

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Solution

The fourth proportional to 21,976,509.90, 30,327,009.21 and 12,186,929.28 is: 16,817,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976,509.90 : 30,327,009.21 = 12,186,929.28 : x
  2. Step 2: Convert to fraction form
    21,976,509.90/30,327,009.21 = 12,186,929.28/x
  3. Step 3: Cross multiply
    21,976,509.90x = 30,327,009.21 × 12,186,929.28
  4. Step 4: Simplify right side
    21,976,509.90x = 369,593,116,516,178.69
  5. Step 5: Solve for x
    x = 369,593,116,516,178.69/21,976,509.90
  6. Step 6: Final answer
    x = 16,817,643.85

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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.