Home / 28,328.78-39,073.10-19,366.94

Finding the Fourth Proportional to 28,328.78, 39,073.10 and 19,366.94

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Solution

The fourth proportional to 28,328.78, 39,073.10 and 19,366.94 is: 26,712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.78 : 39,073.10 = 19,366.94 : x
  2. Step 2: Convert to fraction form
    28,328.78/39,073.10 = 19,366.94/x
  3. Step 3: Cross multiply
    28,328.78x = 39,073.10 × 19,366.94
  4. Step 4: Simplify right side
    28,328.78x = 756,726,383.31
  5. Step 5: Solve for x
    x = 756,726,383.31/28,328.78
  6. Step 6: Final answer
    x = 26,712.28

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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.