Home / 12,991,929.60-19,487,894.40-3,408,276.90

Finding the Fourth Proportional to 12,991,929.60, 19,487,894.40 and 3,408,276.90

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Solution

The fourth proportional to 12,991,929.60, 19,487,894.40 and 3,408,276.90 is: 5,112,415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991,929.60 : 19,487,894.40 = 3,408,276.90 : x
  2. Step 2: Convert to fraction form
    12,991,929.60/19,487,894.40 = 3,408,276.90/x
  3. Step 3: Cross multiply
    12,991,929.60x = 19,487,894.40 × 3,408,276.90
  4. Step 4: Simplify right side
    12,991,929.60x = 66,420,140,313,159.35
  5. Step 5: Solve for x
    x = 66,420,140,313,159.35/12,991,929.60
  6. Step 6: Final answer
    x = 5,112,415.35

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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.