Home / 28,993.95-40,084.77-21,428.35

Finding the Fourth Proportional to 28,993.95, 40,084.77 and 21,428.35

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Solution

The fourth proportional to 28,993.95, 40,084.77 and 21,428.35 is: 29,625.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.95 : 40,084.77 = 21,428.35 : x
  2. Step 2: Convert to fraction form
    28,993.95/40,084.77 = 21,428.35/x
  3. Step 3: Cross multiply
    28,993.95x = 40,084.77 × 21,428.35
  4. Step 4: Simplify right side
    28,993.95x = 858,950,461.37
  5. Step 5: Solve for x
    x = 858,950,461.37/28,993.95
  6. Step 6: Final answer
    x = 29,625.16

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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.