Home / 12,909,765.20-19,357,649.40-5,328,165.20

Finding the Fourth Proportional to 12,909,765.20, 19,357,649.40 and 5,328,165.20

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Solution

The fourth proportional to 12,909,765.20, 19,357,649.40 and 5,328,165.20 is: 7,989,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909,765.20 : 19,357,649.40 = 5,328,165.20 : x
  2. Step 2: Convert to fraction form
    12,909,765.20/19,357,649.40 = 5,328,165.20/x
  3. Step 3: Cross multiply
    12,909,765.20x = 19,357,649.40 × 5,328,165.20
  4. Step 4: Simplify right side
    12,909,765.20x = 103,140,753,886,880.88
  5. Step 5: Solve for x
    x = 103,140,753,886,880.88/12,909,765.20
  6. Step 6: Final answer
    x = 7,989,359.39

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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.