Home / 12,276.06-18,413.64-7,312.79

Finding the Fourth Proportional to 12,276.06, 18,413.64 and 7,312.79

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Solution

The fourth proportional to 12,276.06, 18,413.64 and 7,312.79 is: 10,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.06 : 18,413.64 = 7,312.79 : x
  2. Step 2: Convert to fraction form
    12,276.06/18,413.64 = 7,312.79/x
  3. Step 3: Cross multiply
    12,276.06x = 18,413.64 × 7,312.79
  4. Step 4: Simplify right side
    12,276.06x = 134,655,056.13
  5. Step 5: Solve for x
    x = 134,655,056.13/12,276.06
  6. Step 6: Final answer
    x = 10,968.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.