Home / 18,713.40-28,071.45-11,301.90

Finding the Fourth Proportional to 18,713.40, 28,071.45 and 11,301.90

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Solution

The fourth proportional to 18,713.40, 28,071.45 and 11,301.90 is: 16,953.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.40 : 28,071.45 = 11,301.90 : x
  2. Step 2: Convert to fraction form
    18,713.40/28,071.45 = 11,301.90/x
  3. Step 3: Cross multiply
    18,713.40x = 28,071.45 × 11,301.90
  4. Step 4: Simplify right side
    18,713.40x = 317,260,720.76
  5. Step 5: Solve for x
    x = 317,260,720.76/18,713.40
  6. Step 6: Final answer
    x = 16,953.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.