Home / 19,282.56-28,911.12-12,688.80

Finding the Fourth Proportional to 19,282.56, 28,911.12 and 12,688.80

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Solution

The fourth proportional to 19,282.56, 28,911.12 and 12,688.80 is: 19,024.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,282.56 : 28,911.12 = 12,688.80 : x
  2. Step 2: Convert to fraction form
    19,282.56/28,911.12 = 12,688.80/x
  3. Step 3: Cross multiply
    19,282.56x = 28,911.12 × 12,688.80
  4. Step 4: Simplify right side
    19,282.56x = 366,847,419.46
  5. Step 5: Solve for x
    x = 366,847,419.46/19,282.56
  6. Step 6: Final answer
    x = 19,024.83

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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.