Home / 39,015.07-53,840.80-21,110.02

Finding the Fourth Proportional to 39,015.07, 53,840.80 and 21,110.02

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Solution

The fourth proportional to 39,015.07, 53,840.80 and 21,110.02 is: 29,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,015.07 : 53,840.80 = 21,110.02 : x
  2. Step 2: Convert to fraction form
    39,015.07/53,840.80 = 21,110.02/x
  3. Step 3: Cross multiply
    39,015.07x = 53,840.80 × 21,110.02
  4. Step 4: Simplify right side
    39,015.07x = 1,136,580,256.60
  5. Step 5: Solve for x
    x = 1,136,580,256.60/39,015.07
  6. Step 6: Final answer
    x = 29,131.83

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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.