Home / 28,430.44-39,233.37-15,683.63

Finding the Fourth Proportional to 28,430.44, 39,233.37 and 15,683.63

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Solution

The fourth proportional to 28,430.44, 39,233.37 and 15,683.63 is: 21,643.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.44 : 39,233.37 = 15,683.63 : x
  2. Step 2: Convert to fraction form
    28,430.44/39,233.37 = 15,683.63/x
  3. Step 3: Cross multiply
    28,430.44x = 39,233.37 × 15,683.63
  4. Step 4: Simplify right side
    28,430.44x = 615,321,668.50
  5. Step 5: Solve for x
    x = 615,321,668.50/28,430.44
  6. Step 6: Final answer
    x = 21,643.06

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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.