Home / 28,178.55-38,870.08-16,696.80

Finding the Fourth Proportional to 28,178.55, 38,870.08 and 16,696.80

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Solution

The fourth proportional to 28,178.55, 38,870.08 and 16,696.80 is: 23,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.55 : 38,870.08 = 16,696.80 : x
  2. Step 2: Convert to fraction form
    28,178.55/38,870.08 = 16,696.80/x
  3. Step 3: Cross multiply
    28,178.55x = 38,870.08 × 16,696.80
  4. Step 4: Simplify right side
    28,178.55x = 649,005,910.00
  5. Step 5: Solve for x
    x = 649,005,910.00/28,178.55
  6. Step 6: Final answer
    x = 23,031.91

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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.