Home / 12,520,905.40-18,793,799.70-6,138,364.60

Finding the Fourth Proportional to 12,520,905.40, 18,793,799.70 and 6,138,364.60

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Solution

The fourth proportional to 12,520,905.40, 18,793,799.70 and 6,138,364.60 is: 9,213,646.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520,905.40 : 18,793,799.70 = 6,138,364.60 : x
  2. Step 2: Convert to fraction form
    12,520,905.40/18,793,799.70 = 6,138,364.60/x
  3. Step 3: Cross multiply
    12,520,905.40x = 18,793,799.70 × 6,138,364.60
  4. Step 4: Simplify right side
    12,520,905.40x = 115,363,194,777,970.61
  5. Step 5: Solve for x
    x = 115,363,194,777,970.61/12,520,905.40
  6. Step 6: Final answer
    x = 9,213,646.39

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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.