Home / 20,806,605.20-31,209,907.80-7,341,683.60

Finding the Fourth Proportional to 20,806,605.20, 31,209,907.80 and 7,341,683.60

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Solution

The fourth proportional to 20,806,605.20, 31,209,907.80 and 7,341,683.60 is: 11,012,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,605.20 : 31,209,907.80 = 7,341,683.60 : x
  2. Step 2: Convert to fraction form
    20,806,605.20/31,209,907.80 = 7,341,683.60/x
  3. Step 3: Cross multiply
    20,806,605.20x = 31,209,907.80 × 7,341,683.60
  4. Step 4: Simplify right side
    20,806,605.20x = 229,133,268,252,772.06
  5. Step 5: Solve for x
    x = 229,133,268,252,772.06/20,806,605.20
  6. Step 6: Final answer
    x = 11,012,525.40

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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.