Home / 27,765,838.72-38,289,938.88-21,652,036.48

Finding the Fourth Proportional to 27,765,838.72, 38,289,938.88 and 21,652,036.48

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Solution

The fourth proportional to 27,765,838.72, 38,289,938.88 and 21,652,036.48 is: 29,858,819.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765,838.72 : 38,289,938.88 = 21,652,036.48 : x
  2. Step 2: Convert to fraction form
    27,765,838.72/38,289,938.88 = 21,652,036.48/x
  3. Step 3: Cross multiply
    27,765,838.72x = 38,289,938.88 × 21,652,036.48
  4. Step 4: Simplify right side
    27,765,838.72x = 829,055,153,446,730.38
  5. Step 5: Solve for x
    x = 829,055,153,446,730.38/27,765,838.72
  6. Step 6: Final answer
    x = 29,858,819.03

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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.