Home / 19,211.12-28,816.76-12,975.76

Finding the Fourth Proportional to 19,211.12, 28,816.76 and 12,975.76

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Solution

The fourth proportional to 19,211.12, 28,816.76 and 12,975.76 is: 19,463.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.12 : 28,816.76 = 12,975.76 : x
  2. Step 2: Convert to fraction form
    19,211.12/28,816.76 = 12,975.76/x
  3. Step 3: Cross multiply
    19,211.12x = 28,816.76 × 12,975.76
  4. Step 4: Simplify right side
    19,211.12x = 373,919,361.74
  5. Step 5: Solve for x
    x = 373,919,361.74/19,211.12
  6. Step 6: Final answer
    x = 19,463.69

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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.