Home / 10,790,638.40-16,185,957.60-5,415,867.20

Finding the Fourth Proportional to 10,790,638.40, 16,185,957.60 and 5,415,867.20

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Solution

The fourth proportional to 10,790,638.40, 16,185,957.60 and 5,415,867.20 is: 8,123,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,790,638.40 : 16,185,957.60 = 5,415,867.20 : x
  2. Step 2: Convert to fraction form
    10,790,638.40/16,185,957.60 = 5,415,867.20/x
  3. Step 3: Cross multiply
    10,790,638.40x = 16,185,957.60 × 5,415,867.20
  4. Step 4: Simplify right side
    10,790,638.40x = 87,660,996,866,430.72
  5. Step 5: Solve for x
    x = 87,660,996,866,430.72/10,790,638.40
  6. Step 6: Final answer
    x = 8,123,800.80

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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.