Home / 28,101.76-38,771.13-18,546.40

Finding the Fourth Proportional to 28,101.76, 38,771.13 and 18,546.40

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Solution

The fourth proportional to 28,101.76, 38,771.13 and 18,546.40 is: 25,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.76 : 38,771.13 = 18,546.40 : x
  2. Step 2: Convert to fraction form
    28,101.76/38,771.13 = 18,546.40/x
  3. Step 3: Cross multiply
    28,101.76x = 38,771.13 × 18,546.40
  4. Step 4: Simplify right side
    28,101.76x = 719,064,885.43
  5. Step 5: Solve for x
    x = 719,064,885.43/28,101.76
  6. Step 6: Final answer
    x = 25,587.90

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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.