Home / 20,784,420.40-31,176,630.60-9,447,012.40

Finding the Fourth Proportional to 20,784,420.40, 31,176,630.60 and 9,447,012.40

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Solution

The fourth proportional to 20,784,420.40, 31,176,630.60 and 9,447,012.40 is: 14,170,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,420.40 : 31,176,630.60 = 9,447,012.40 : x
  2. Step 2: Convert to fraction form
    20,784,420.40/31,176,630.60 = 9,447,012.40/x
  3. Step 3: Cross multiply
    20,784,420.40x = 31,176,630.60 × 9,447,012.40
  4. Step 4: Simplify right side
    20,784,420.40x = 294,526,015,868,419.44
  5. Step 5: Solve for x
    x = 294,526,015,868,419.44/20,784,420.40
  6. Step 6: Final answer
    x = 14,170,518.60

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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.