Home / 20,806,609.20-31,209,913.80-7,341,687.60

Finding the Fourth Proportional to 20,806,609.20, 31,209,913.80 and 7,341,687.60

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Solution

The fourth proportional to 20,806,609.20, 31,209,913.80 and 7,341,687.60 is: 11,012,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,609.20 : 31,209,913.80 = 7,341,687.60 : x
  2. Step 2: Convert to fraction form
    20,806,609.20/31,209,913.80 = 7,341,687.60/x
  3. Step 3: Cross multiply
    20,806,609.20x = 31,209,913.80 × 7,341,687.60
  4. Step 4: Simplify right side
    20,806,609.20x = 229,133,437,142,528.88
  5. Step 5: Solve for x
    x = 229,133,437,142,528.88/20,806,609.20
  6. Step 6: Final answer
    x = 11,012,531.40

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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.