Home / 38,721,615.57-53,433,800.91-21,314,560.86

Finding the Fourth Proportional to 38,721,615.57, 53,433,800.91 and 21,314,560.86

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Solution

The fourth proportional to 38,721,615.57, 53,433,800.91 and 21,314,560.86 is: 29,412,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721,615.57 : 53,433,800.91 = 21,314,560.86 : x
  2. Step 2: Convert to fraction form
    38,721,615.57/53,433,800.91 = 21,314,560.86/x
  3. Step 3: Cross multiply
    38,721,615.57x = 53,433,800.91 × 21,314,560.86
  4. Step 4: Simplify right side
    38,721,615.57x = 1,138,918,001,477,318.25
  5. Step 5: Solve for x
    x = 1,138,918,001,477,318.25/38,721,615.57
  6. Step 6: Final answer
    x = 29,412,977.34

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1.5x scale

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.