Home / 20,736,020.40-31,104,030.60-12,211,969.20

Finding the Fourth Proportional to 20,736,020.40, 31,104,030.60 and 12,211,969.20

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Solution

The fourth proportional to 20,736,020.40, 31,104,030.60 and 12,211,969.20 is: 18,317,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,020.40 : 31,104,030.60 = 12,211,969.20 : x
  2. Step 2: Convert to fraction form
    20,736,020.40/31,104,030.60 = 12,211,969.20/x
  3. Step 3: Cross multiply
    20,736,020.40x = 31,104,030.60 × 12,211,969.20
  4. Step 4: Simplify right side
    20,736,020.40x = 379,841,463,683,057.50
  5. Step 5: Solve for x
    x = 379,841,463,683,057.50/20,736,020.40
  6. Step 6: Final answer
    x = 18,317,953.80

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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.