Home / 28,861.40-39,828.69-16,764.18

Finding the Fourth Proportional to 28,861.40, 39,828.69 and 16,764.18

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Solution

The fourth proportional to 28,861.40, 39,828.69 and 16,764.18 is: 23,134.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.40 : 39,828.69 = 16,764.18 : x
  2. Step 2: Convert to fraction form
    28,861.40/39,828.69 = 16,764.18/x
  3. Step 3: Cross multiply
    28,861.40x = 39,828.69 × 16,764.18
  4. Step 4: Simplify right side
    28,861.40x = 667,695,328.32
  5. Step 5: Solve for x
    x = 667,695,328.32/28,861.40
  6. Step 6: Final answer
    x = 23,134.55

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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.