Home / 38,427.30-53,033.48-28,719.90

Finding the Fourth Proportional to 38,427.30, 53,033.48 and 28,719.90

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Solution

The fourth proportional to 38,427.30, 53,033.48 and 28,719.90 is: 39,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427.30 : 53,033.48 = 28,719.90 : x
  2. Step 2: Convert to fraction form
    38,427.30/53,033.48 = 28,719.90/x
  3. Step 3: Cross multiply
    38,427.30x = 53,033.48 × 28,719.90
  4. Step 4: Simplify right side
    38,427.30x = 1,523,116,242.25
  5. Step 5: Solve for x
    x = 1,523,116,242.25/38,427.30
  6. Step 6: Final answer
    x = 39,636.31

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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.