Home / 28,090.60-38,764.26-15,514.60

Finding the Fourth Proportional to 28,090.60, 38,764.26 and 15,514.60

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Solution

The fourth proportional to 28,090.60, 38,764.26 and 15,514.60 is: 21,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.60 : 38,764.26 = 15,514.60 : x
  2. Step 2: Convert to fraction form
    28,090.60/38,764.26 = 15,514.60/x
  3. Step 3: Cross multiply
    28,090.60x = 38,764.26 × 15,514.60
  4. Step 4: Simplify right side
    28,090.60x = 601,411,988.20
  5. Step 5: Solve for x
    x = 601,411,988.20/28,090.60
  6. Step 6: Final answer
    x = 21,409.72

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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.