Home / 20,687,068.20-31,009,310.80-9,177,955.60

Finding the Fourth Proportional to 20,687,068.20, 31,009,310.80 and 9,177,955.60

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Solution

The fourth proportional to 20,687,068.20, 31,009,310.80 and 9,177,955.60 is: 13,757,487.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,068.20 : 31,009,310.80 = 9,177,955.60 : x
  2. Step 2: Convert to fraction form
    20,687,068.20/31,009,310.80 = 9,177,955.60/x
  3. Step 3: Cross multiply
    20,687,068.20x = 31,009,310.80 × 9,177,955.60
  4. Step 4: Simplify right side
    20,687,068.20x = 284,602,077,709,000.50
  5. Step 5: Solve for x
    x = 284,602,077,709,000.50/20,687,068.20
  6. Step 6: Final answer
    x = 13,757,487.28

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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.