Home / 13,722.32-18,925.53-8,413.40

Finding the Fourth Proportional to 13,722.32, 18,925.53 and 8,413.40

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Solution

The fourth proportional to 13,722.32, 18,925.53 and 8,413.40 is: 11,603.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.32 : 18,925.53 = 8,413.40 : x
  2. Step 2: Convert to fraction form
    13,722.32/18,925.53 = 8,413.40/x
  3. Step 3: Cross multiply
    13,722.32x = 18,925.53 × 8,413.40
  4. Step 4: Simplify right side
    13,722.32x = 159,228,054.10
  5. Step 5: Solve for x
    x = 159,228,054.10/13,722.32
  6. Step 6: Final answer
    x = 11,603.58

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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.