Home / 21,297,128.25-31,932,905.72-9,768,153.63

Finding the Fourth Proportional to 21,297,128.25, 31,932,905.72 and 9,768,153.63

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Solution

The fourth proportional to 21,297,128.25, 31,932,905.72 and 9,768,153.63 is: 14,646,365.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297,128.25 : 31,932,905.72 = 9,768,153.63 : x
  2. Step 2: Convert to fraction form
    21,297,128.25/31,932,905.72 = 9,768,153.63/x
  3. Step 3: Cross multiply
    21,297,128.25x = 31,932,905.72 × 9,768,153.63
  4. Step 4: Simplify right side
    21,297,128.25x = 311,925,528,876,425
  5. Step 5: Solve for x
    x = 311,925,528,876,425/21,297,128.25
  6. Step 6: Final answer
    x = 14,646,365.71

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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.