Home / 12,900.26-19,350.39-10,319.60

Finding the Fourth Proportional to 12,900.26, 19,350.39 and 10,319.60

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Solution

The fourth proportional to 12,900.26, 19,350.39 and 10,319.60 is: 15,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.26 : 19,350.39 = 10,319.60 : x
  2. Step 2: Convert to fraction form
    12,900.26/19,350.39 = 10,319.60/x
  3. Step 3: Cross multiply
    12,900.26x = 19,350.39 × 10,319.60
  4. Step 4: Simplify right side
    12,900.26x = 199,688,284.64
  5. Step 5: Solve for x
    x = 199,688,284.64/12,900.26
  6. Step 6: Final answer
    x = 15,479.40

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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.