Home / 39,071.90-53,919.48-21,166.91

Finding the Fourth Proportional to 39,071.90, 53,919.48 and 21,166.91

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Solution

The fourth proportional to 39,071.90, 53,919.48 and 21,166.91 is: 29,210.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,071.90 : 53,919.48 = 21,166.91 : x
  2. Step 2: Convert to fraction form
    39,071.90/53,919.48 = 21,166.91/x
  3. Step 3: Cross multiply
    39,071.90x = 53,919.48 × 21,166.91
  4. Step 4: Simplify right side
    39,071.90x = 1,141,308,780.41
  5. Step 5: Solve for x
    x = 1,141,308,780.41/39,071.90
  6. Step 6: Final answer
    x = 29,210.48

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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.