Home / 28,389.56-42,584.34-12,811.64

Finding the Fourth Proportional to 28,389.56, 42,584.34 and 12,811.64

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Solution

The fourth proportional to 28,389.56, 42,584.34 and 12,811.64 is: 19,217.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.56 : 42,584.34 = 12,811.64 : x
  2. Step 2: Convert to fraction form
    28,389.56/42,584.34 = 12,811.64/x
  3. Step 3: Cross multiply
    28,389.56x = 42,584.34 × 12,811.64
  4. Step 4: Simplify right side
    28,389.56x = 545,575,233.72
  5. Step 5: Solve for x
    x = 545,575,233.72/28,389.56
  6. Step 6: Final answer
    x = 19,217.46

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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.