Home / 18,847.79-28,271.70-8,315.58

Finding the Fourth Proportional to 18,847.79, 28,271.70 and 8,315.58

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Solution

The fourth proportional to 18,847.79, 28,271.70 and 8,315.58 is: 12,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,847.79 : 28,271.70 = 8,315.58 : x
  2. Step 2: Convert to fraction form
    18,847.79/28,271.70 = 8,315.58/x
  3. Step 3: Cross multiply
    18,847.79x = 28,271.70 × 8,315.58
  4. Step 4: Simplify right side
    18,847.79x = 235,095,583.09
  5. Step 5: Solve for x
    x = 235,095,583.09/18,847.79
  6. Step 6: Final answer
    x = 12,473.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.