Home / 11,880,145.40-17,820,218.10-8,289,966.20

Finding the Fourth Proportional to 11,880,145.40, 17,820,218.10 and 8,289,966.20

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Solution

The fourth proportional to 11,880,145.40, 17,820,218.10 and 8,289,966.20 is: 12,434,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,880,145.40 : 17,820,218.10 = 8,289,966.20 : x
  2. Step 2: Convert to fraction form
    11,880,145.40/17,820,218.10 = 8,289,966.20/x
  3. Step 3: Cross multiply
    11,880,145.40x = 17,820,218.10 × 8,289,966.20
  4. Step 4: Simplify right side
    11,880,145.40x = 147,729,005,725,628.25
  5. Step 5: Solve for x
    x = 147,729,005,725,628.25/11,880,145.40
  6. Step 6: Final answer
    x = 12,434,949.30

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1.5x scale

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.