Home / 20,758.46-31,152.65-8,271.23

Finding the Fourth Proportional to 20,758.46, 31,152.65 and 8,271.23

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Solution

The fourth proportional to 20,758.46, 31,152.65 and 8,271.23 is: 12,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.46 : 31,152.65 = 8,271.23 : x
  2. Step 2: Convert to fraction form
    20,758.46/31,152.65 = 8,271.23/x
  3. Step 3: Cross multiply
    20,758.46x = 31,152.65 × 8,271.23
  4. Step 4: Simplify right side
    20,758.46x = 257,670,536.14
  5. Step 5: Solve for x
    x = 257,670,536.14/20,758.46
  6. Step 6: Final answer
    x = 12,412.80

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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.