Home / 20,333.93-28,061.42-11,381.40

Finding the Fourth Proportional to 20,333.93, 28,061.42 and 11,381.40

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Solution

The fourth proportional to 20,333.93, 28,061.42 and 11,381.40 is: 15,706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.93 : 28,061.42 = 11,381.40 : x
  2. Step 2: Convert to fraction form
    20,333.93/28,061.42 = 11,381.40/x
  3. Step 3: Cross multiply
    20,333.93x = 28,061.42 × 11,381.40
  4. Step 4: Simplify right side
    20,333.93x = 319,378,188.68
  5. Step 5: Solve for x
    x = 319,378,188.68/20,333.93
  6. Step 6: Final answer
    x = 15,706.67

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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.