Home / 12,112,671-18,172,943.10-8,085,529.20

Finding the Fourth Proportional to 12,112,671, 18,172,943.10 and 8,085,529.20

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Solution

The fourth proportional to 12,112,671, 18,172,943.10 and 8,085,529.20 is: 12,130,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112,671 : 18,172,943.10 = 8,085,529.20 : x
  2. Step 2: Convert to fraction form
    12,112,671/18,172,943.10 = 8,085,529.20/x
  3. Step 3: Cross multiply
    12,112,671x = 18,172,943.10 × 8,085,529.20
  4. Step 4: Simplify right side
    12,112,671x = 146,937,862,084,988.53
  5. Step 5: Solve for x
    x = 146,937,862,084,988.53/12,112,671
  6. Step 6: Final answer
    x = 12,130,921.58

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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.