Home / 39,012.51-53,837.28-21,107.46

Finding the Fourth Proportional to 39,012.51, 53,837.28 and 21,107.46

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Solution

The fourth proportional to 39,012.51, 53,837.28 and 21,107.46 is: 29,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,012.51 : 53,837.28 = 21,107.46 : x
  2. Step 2: Convert to fraction form
    39,012.51/53,837.28 = 21,107.46/x
  3. Step 3: Cross multiply
    39,012.51x = 53,837.28 × 21,107.46
  4. Step 4: Simplify right side
    39,012.51x = 1,136,368,234.11
  5. Step 5: Solve for x
    x = 1,136,368,234.11/39,012.51
  6. Step 6: Final answer
    x = 29,128.30

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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.