Home / 39,079.58-53,929.86-21,174.58

Finding the Fourth Proportional to 39,079.58, 53,929.86 and 21,174.58

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Solution

The fourth proportional to 39,079.58, 53,929.86 and 21,174.58 is: 29,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.58 : 53,929.86 = 21,174.58 : x
  2. Step 2: Convert to fraction form
    39,079.58/53,929.86 = 21,174.58/x
  3. Step 3: Cross multiply
    39,079.58x = 53,929.86 × 21,174.58
  4. Step 4: Simplify right side
    39,079.58x = 1,141,941,938.72
  5. Step 5: Solve for x
    x = 1,141,941,938.72/39,079.58
  6. Step 6: Final answer
    x = 29,220.94

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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.