Home / 28,439.52-39,256.64-18,749.76

Finding the Fourth Proportional to 28,439.52, 39,256.64 and 18,749.76

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Solution

The fourth proportional to 28,439.52, 39,256.64 and 18,749.76 is: 25,881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.52 : 39,256.64 = 18,749.76 : x
  2. Step 2: Convert to fraction form
    28,439.52/39,256.64 = 18,749.76/x
  3. Step 3: Cross multiply
    28,439.52x = 39,256.64 × 18,749.76
  4. Step 4: Simplify right side
    28,439.52x = 736,052,578.41
  5. Step 5: Solve for x
    x = 736,052,578.41/28,439.52
  6. Step 6: Final answer
    x = 25,881.33

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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.