Home / 38,427.10-53,029.28-21,431.36

Finding the Fourth Proportional to 38,427.10, 53,029.28 and 21,431.36

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Solution

The fourth proportional to 38,427.10, 53,029.28 and 21,431.36 is: 29,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427.10 : 53,029.28 = 21,431.36 : x
  2. Step 2: Convert to fraction form
    38,427.10/53,029.28 = 21,431.36/x
  3. Step 3: Cross multiply
    38,427.10x = 53,029.28 × 21,431.36
  4. Step 4: Simplify right side
    38,427.10x = 1,136,489,776.37
  5. Step 5: Solve for x
    x = 1,136,489,776.37/38,427.10
  6. Step 6: Final answer
    x = 29,575.22

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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.