Home / 12,880.06-19,307.02-7,321.92

Finding the Fourth Proportional to 12,880.06, 19,307.02 and 7,321.92

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Solution

The fourth proportional to 12,880.06, 19,307.02 and 7,321.92 is: 10,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.06 : 19,307.02 = 7,321.92 : x
  2. Step 2: Convert to fraction form
    12,880.06/19,307.02 = 7,321.92/x
  3. Step 3: Cross multiply
    12,880.06x = 19,307.02 × 7,321.92
  4. Step 4: Simplify right side
    12,880.06x = 141,364,527.75
  5. Step 5: Solve for x
    x = 141,364,527.75/12,880.06
  6. Step 6: Final answer
    x = 10,975.45

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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.