Home / 28,103.50-38,800.91-18,036.28

Finding the Fourth Proportional to 28,103.50, 38,800.91 and 18,036.28

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Solution

The fourth proportional to 28,103.50, 38,800.91 and 18,036.28 is: 24,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.50 : 38,800.91 = 18,036.28 : x
  2. Step 2: Convert to fraction form
    28,103.50/38,800.91 = 18,036.28/x
  3. Step 3: Cross multiply
    28,103.50x = 38,800.91 × 18,036.28
  4. Step 4: Simplify right side
    28,103.50x = 699,824,301.43
  5. Step 5: Solve for x
    x = 699,824,301.43/28,103.50
  6. Step 6: Final answer
    x = 24,901.67

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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.