Home / 28,538.86-42,790.07-13,718.29

Finding the Fourth Proportional to 28,538.86, 42,790.07 and 13,718.29

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Solution

The fourth proportional to 28,538.86, 42,790.07 and 13,718.29 is: 20,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.86 : 42,790.07 = 13,718.29 : x
  2. Step 2: Convert to fraction form
    28,538.86/42,790.07 = 13,718.29/x
  3. Step 3: Cross multiply
    28,538.86x = 42,790.07 × 13,718.29
  4. Step 4: Simplify right side
    28,538.86x = 587,006,520.79
  5. Step 5: Solve for x
    x = 587,006,520.79/28,538.86
  6. Step 6: Final answer
    x = 20,568.67

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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.