Home / 28,409,022.78-39,204,434.54-15,356,281.90

Finding the Fourth Proportional to 28,409,022.78, 39,204,434.54 and 15,356,281.90

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Solution

The fourth proportional to 28,409,022.78, 39,204,434.54 and 15,356,281.90 is: 21,191,659.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409,022.78 : 39,204,434.54 = 15,356,281.90 : x
  2. Step 2: Convert to fraction form
    28,409,022.78/39,204,434.54 = 15,356,281.90/x
  3. Step 3: Cross multiply
    28,409,022.78x = 39,204,434.54 × 15,356,281.90
  4. Step 4: Simplify right side
    28,409,022.78x = 602,034,348,466,716.38
  5. Step 5: Solve for x
    x = 602,034,348,466,716.38/28,409,022.78
  6. Step 6: Final answer
    x = 21,191,659.89

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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.