Home / 39,017.76-53,844.36-21,112.80

Finding the Fourth Proportional to 39,017.76, 53,844.36 and 21,112.80

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Solution

The fourth proportional to 39,017.76, 53,844.36 and 21,112.80 is: 29,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.76 : 53,844.36 = 21,112.80 : x
  2. Step 2: Convert to fraction form
    39,017.76/53,844.36 = 21,112.80/x
  3. Step 3: Cross multiply
    39,017.76x = 53,844.36 × 21,112.80
  4. Step 4: Simplify right side
    39,017.76x = 1,136,805,203.81
  5. Step 5: Solve for x
    x = 1,136,805,203.81/39,017.76
  6. Step 6: Final answer
    x = 29,135.58

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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.