Home / 38,465,900.12-53,083,028.12-20,824,988.60

Finding the Fourth Proportional to 38,465,900.12, 53,083,028.12 and 20,824,988.60

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Solution

The fourth proportional to 38,465,900.12, 53,083,028.12 and 20,824,988.60 is: 28,738,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,465,900.12 : 53,083,028.12 = 20,824,988.60 : x
  2. Step 2: Convert to fraction form
    38,465,900.12/53,083,028.12 = 20,824,988.60/x
  3. Step 3: Cross multiply
    38,465,900.12x = 53,083,028.12 × 20,824,988.60
  4. Step 4: Simplify right side
    38,465,900.12x = 1,105,453,455,082,939.38
  5. Step 5: Solve for x
    x = 1,105,453,455,082,939.38/38,465,900.12
  6. Step 6: Final answer
    x = 28,738,530.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.