Home / 39,828.69-54,962.52-21,679.77

Finding the Fourth Proportional to 39,828.69, 54,962.52 and 21,679.77

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Solution

The fourth proportional to 39,828.69, 54,962.52 and 21,679.77 is: 29,917.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,828.69 : 54,962.52 = 21,679.77 : x
  2. Step 2: Convert to fraction form
    39,828.69/54,962.52 = 21,679.77/x
  3. Step 3: Cross multiply
    39,828.69x = 54,962.52 × 21,679.77
  4. Step 4: Simplify right side
    39,828.69x = 1,191,574,792.22
  5. Step 5: Solve for x
    x = 1,191,574,792.22/39,828.69
  6. Step 6: Final answer
    x = 29,917.50

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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.