Home / 21,780,940.70-32,671,411.05-7,420,223.90

Finding the Fourth Proportional to 21,780,940.70, 32,671,411.05 and 7,420,223.90

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Solution

The fourth proportional to 21,780,940.70, 32,671,411.05 and 7,420,223.90 is: 11,130,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,940.70 : 32,671,411.05 = 7,420,223.90 : x
  2. Step 2: Convert to fraction form
    21,780,940.70/32,671,411.05 = 7,420,223.90/x
  3. Step 3: Cross multiply
    21,780,940.70x = 32,671,411.05 × 7,420,223.90
  4. Step 4: Simplify right side
    21,780,940.70x = 242,429,185,119,934.12
  5. Step 5: Solve for x
    x = 242,429,185,119,934.12/21,780,940.70
  6. Step 6: Final answer
    x = 11,130,335.85

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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.