Home / 18,742,770.62-28,117,990.43-6,445,136.80

Finding the Fourth Proportional to 18,742,770.62, 28,117,990.43 and 6,445,136.80

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Solution

The fourth proportional to 18,742,770.62, 28,117,990.43 and 6,445,136.80 is: 9,669,023.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742,770.62 : 28,117,990.43 = 6,445,136.80 : x
  2. Step 2: Convert to fraction form
    18,742,770.62/28,117,990.43 = 6,445,136.80/x
  3. Step 3: Cross multiply
    18,742,770.62x = 28,117,990.43 × 6,445,136.80
  4. Step 4: Simplify right side
    18,742,770.62x = 181,224,294,689,625.19
  5. Step 5: Solve for x
    x = 181,224,294,689,625.19/18,742,770.62
  6. Step 6: Final answer
    x = 9,669,023.77

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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.