Home / 28,344.64-39,124.56-19,388.80

Finding the Fourth Proportional to 28,344.64, 39,124.56 and 19,388.80

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Solution

The fourth proportional to 28,344.64, 39,124.56 and 19,388.80 is: 26,762.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.64 : 39,124.56 = 19,388.80 : x
  2. Step 2: Convert to fraction form
    28,344.64/39,124.56 = 19,388.80/x
  3. Step 3: Cross multiply
    28,344.64x = 39,124.56 × 19,388.80
  4. Step 4: Simplify right side
    28,344.64x = 758,578,268.93
  5. Step 5: Solve for x
    x = 758,578,268.93/28,344.64
  6. Step 6: Final answer
    x = 26,762.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.