Home / 28,188.03-38,899.91-15,440.96

Finding the Fourth Proportional to 28,188.03, 38,899.91 and 15,440.96

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Solution

The fourth proportional to 28,188.03, 38,899.91 and 15,440.96 is: 21,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.03 : 38,899.91 = 15,440.96 : x
  2. Step 2: Convert to fraction form
    28,188.03/38,899.91 = 15,440.96/x
  3. Step 3: Cross multiply
    28,188.03x = 38,899.91 × 15,440.96
  4. Step 4: Simplify right side
    28,188.03x = 600,652,090.17
  5. Step 5: Solve for x
    x = 600,652,090.17/28,188.03
  6. Step 6: Final answer
    x = 21,308.76

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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.