Home / 20,300.19-28,014.17-11,347.67

Finding the Fourth Proportional to 20,300.19, 28,014.17 and 11,347.67

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Solution

The fourth proportional to 20,300.19, 28,014.17 and 11,347.67 is: 15,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.19 : 28,014.17 = 11,347.67 : x
  2. Step 2: Convert to fraction form
    20,300.19/28,014.17 = 11,347.67/x
  3. Step 3: Cross multiply
    20,300.19x = 28,014.17 × 11,347.67
  4. Step 4: Simplify right side
    20,300.19x = 317,895,359.67
  5. Step 5: Solve for x
    x = 317,895,359.67/20,300.19
  6. Step 6: Final answer
    x = 15,659.72

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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.