Home / 28,263.26-38,981.76-20,706.86

Finding the Fourth Proportional to 28,263.26, 38,981.76 and 20,706.86

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Solution

The fourth proportional to 28,263.26, 38,981.76 and 20,706.86 is: 28,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.26 : 38,981.76 = 20,706.86 : x
  2. Step 2: Convert to fraction form
    28,263.26/38,981.76 = 20,706.86/x
  3. Step 3: Cross multiply
    28,263.26x = 38,981.76 × 20,706.86
  4. Step 4: Simplify right side
    28,263.26x = 807,189,846.87
  5. Step 5: Solve for x
    x = 807,189,846.87/28,263.26
  6. Step 6: Final answer
    x = 28,559.69

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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.