Home / 28,470.21-39,285.91-16,531.22

Finding the Fourth Proportional to 28,470.21, 39,285.91 and 16,531.22

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Solution

The fourth proportional to 28,470.21, 39,285.91 and 16,531.22 is: 22,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.21 : 39,285.91 = 16,531.22 : x
  2. Step 2: Convert to fraction form
    28,470.21/39,285.91 = 16,531.22/x
  3. Step 3: Cross multiply
    28,470.21x = 39,285.91 × 16,531.22
  4. Step 4: Simplify right side
    28,470.21x = 649,443,824.68
  5. Step 5: Solve for x
    x = 649,443,824.68/28,470.21
  6. Step 6: Final answer
    x = 22,811.35

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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.