Home / 28,355.45-39,125.70-16,416.72

Finding the Fourth Proportional to 28,355.45, 39,125.70 and 16,416.72

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Solution

The fourth proportional to 28,355.45, 39,125.70 and 16,416.72 is: 22,652.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.45 : 39,125.70 = 16,416.72 : x
  2. Step 2: Convert to fraction form
    28,355.45/39,125.70 = 16,416.72/x
  3. Step 3: Cross multiply
    28,355.45x = 39,125.70 × 16,416.72
  4. Step 4: Simplify right side
    28,355.45x = 642,315,661.70
  5. Step 5: Solve for x
    x = 642,315,661.70/28,355.45
  6. Step 6: Final answer
    x = 22,652.29

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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.