Home / 28,881.72-39,889.68-19,433.88

Finding the Fourth Proportional to 28,881.72, 39,889.68 and 19,433.88

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Solution

The fourth proportional to 28,881.72, 39,889.68 and 19,433.88 is: 26,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.72 : 39,889.68 = 19,433.88 : x
  2. Step 2: Convert to fraction form
    28,881.72/39,889.68 = 19,433.88/x
  3. Step 3: Cross multiply
    28,881.72x = 39,889.68 × 19,433.88
  4. Step 4: Simplify right side
    28,881.72x = 775,211,254.36
  5. Step 5: Solve for x
    x = 775,211,254.36/28,881.72
  6. Step 6: Final answer
    x = 26,840.90

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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.