Home / 12,225,110.70-18,337,666.05-7,920,438.60

Finding the Fourth Proportional to 12,225,110.70, 18,337,666.05 and 7,920,438.60

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Solution

The fourth proportional to 12,225,110.70, 18,337,666.05 and 7,920,438.60 is: 11,880,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225,110.70 : 18,337,666.05 = 7,920,438.60 : x
  2. Step 2: Convert to fraction form
    12,225,110.70/18,337,666.05 = 7,920,438.60/x
  3. Step 3: Cross multiply
    12,225,110.70x = 18,337,666.05 × 7,920,438.60
  4. Step 4: Simplify right side
    12,225,110.70x = 145,242,358,016,329.53
  5. Step 5: Solve for x
    x = 145,242,358,016,329.53/12,225,110.70
  6. Step 6: Final answer
    x = 11,880,657.90

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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.