Home / 25,621,817.80-38,386,070.70-12,128,902.60

Finding the Fourth Proportional to 25,621,817.80, 38,386,070.70 and 12,128,902.60

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Solution

The fourth proportional to 25,621,817.80, 38,386,070.70 and 12,128,902.60 is: 18,171,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,621,817.80 : 38,386,070.70 = 12,128,902.60 : x
  2. Step 2: Convert to fraction form
    25,621,817.80/38,386,070.70 = 12,128,902.60/x
  3. Step 3: Cross multiply
    25,621,817.80x = 38,386,070.70 × 12,128,902.60
  4. Step 4: Simplify right side
    25,621,817.80x = 465,580,912,717,013.81
  5. Step 5: Solve for x
    x = 465,580,912,717,013.81/25,621,817.80
  6. Step 6: Final answer
    x = 18,171,267.80

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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.