Home / 21,273,309.60-31,909,964.40-21,113,877.30

Finding the Fourth Proportional to 21,273,309.60, 31,909,964.40 and 21,113,877.30

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Solution

The fourth proportional to 21,273,309.60, 31,909,964.40 and 21,113,877.30 is: 31,670,815.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273,309.60 : 31,909,964.40 = 21,113,877.30 : x
  2. Step 2: Convert to fraction form
    21,273,309.60/31,909,964.40 = 21,113,877.30/x
  3. Step 3: Cross multiply
    21,273,309.60x = 31,909,964.40 × 21,113,877.30
  4. Step 4: Simplify right side
    21,273,309.60x = 673,743,072,988,968.12
  5. Step 5: Solve for x
    x = 673,743,072,988,968.12/21,273,309.60
  6. Step 6: Final answer
    x = 31,670,815.95

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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.