Home / 39,413.60-54,390.96-21,508.98

Finding the Fourth Proportional to 39,413.60, 54,390.96 and 21,508.98

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Solution

The fourth proportional to 39,413.60, 54,390.96 and 21,508.98 is: 29,682.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.60 : 54,390.96 = 21,508.98 : x
  2. Step 2: Convert to fraction form
    39,413.60/54,390.96 = 21,508.98/x
  3. Step 3: Cross multiply
    39,413.60x = 54,390.96 × 21,508.98
  4. Step 4: Simplify right side
    39,413.60x = 1,169,894,070.82
  5. Step 5: Solve for x
    x = 1,169,894,070.82/39,413.60
  6. Step 6: Final answer
    x = 29,682.50

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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.