Home / 28,684.88-39,580.80-16,107.20

Finding the Fourth Proportional to 28,684.88, 39,580.80 and 16,107.20

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Solution

The fourth proportional to 28,684.88, 39,580.80 and 16,107.20 is: 22,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.88 : 39,580.80 = 16,107.20 : x
  2. Step 2: Convert to fraction form
    28,684.88/39,580.80 = 16,107.20/x
  3. Step 3: Cross multiply
    28,684.88x = 39,580.80 × 16,107.20
  4. Step 4: Simplify right side
    28,684.88x = 637,535,861.76
  5. Step 5: Solve for x
    x = 637,535,861.76/28,684.88
  6. Step 6: Final answer
    x = 22,225.50

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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.