Home / 21,313.31-29,413.97-12,360.74

Finding the Fourth Proportional to 21,313.31, 29,413.97 and 12,360.74

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Solution

The fourth proportional to 21,313.31, 29,413.97 and 12,360.74 is: 17,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.31 : 29,413.97 = 12,360.74 : x
  2. Step 2: Convert to fraction form
    21,313.31/29,413.97 = 12,360.74/x
  3. Step 3: Cross multiply
    21,313.31x = 29,413.97 × 12,360.74
  4. Step 4: Simplify right side
    21,313.31x = 363,578,226.66
  5. Step 5: Solve for x
    x = 363,578,226.66/21,313.31
  6. Step 6: Final answer
    x = 17,058.74

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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.