Home / 21,107,353.40-31,651,569.30-8,321,276.60

Finding the Fourth Proportional to 21,107,353.40, 31,651,569.30 and 8,321,276.60

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Solution

The fourth proportional to 21,107,353.40, 31,651,569.30 and 8,321,276.60 is: 12,478,185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107,353.40 : 31,651,569.30 = 8,321,276.60 : x
  2. Step 2: Convert to fraction form
    21,107,353.40/31,651,569.30 = 8,321,276.60/x
  3. Step 3: Cross multiply
    21,107,353.40x = 31,651,569.30 × 8,321,276.60
  4. Step 4: Simplify right side
    21,107,353.40x = 263,381,462,969,368.38
  5. Step 5: Solve for x
    x = 263,381,462,969,368.38/21,107,353.40
  6. Step 6: Final answer
    x = 12,478,185.11

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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.