Home / 10,780,939.80-16,171,409.70-5,390,422.20

Finding the Fourth Proportional to 10,780,939.80, 16,171,409.70 and 5,390,422.20

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Solution

The fourth proportional to 10,780,939.80, 16,171,409.70 and 5,390,422.20 is: 8,085,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780,939.80 : 16,171,409.70 = 5,390,422.20 : x
  2. Step 2: Convert to fraction form
    10,780,939.80/16,171,409.70 = 5,390,422.20/x
  3. Step 3: Cross multiply
    10,780,939.80x = 16,171,409.70 × 5,390,422.20
  4. Step 4: Simplify right side
    10,780,939.80x = 87,170,725,852,175.34
  5. Step 5: Solve for x
    x = 87,170,725,852,175.34/10,780,939.80
  6. Step 6: Final answer
    x = 8,085,633.30

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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.