Home / 25,621,750.80-38,385,970.20-12,128,835.60

Finding the Fourth Proportional to 25,621,750.80, 38,385,970.20 and 12,128,835.60

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Solution

The fourth proportional to 25,621,750.80, 38,385,970.20 and 12,128,835.60 is: 18,171,167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,621,750.80 : 38,385,970.20 = 12,128,835.60 : x
  2. Step 2: Convert to fraction form
    25,621,750.80/38,385,970.20 = 12,128,835.60/x
  3. Step 3: Cross multiply
    25,621,750.80x = 38,385,970.20 × 12,128,835.60
  4. Step 4: Simplify right side
    25,621,750.80x = 465,577,121,902,299.12
  5. Step 5: Solve for x
    x = 465,577,121,902,299.12/25,621,750.80
  6. Step 6: Final answer
    x = 18,171,167.36

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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.