Home / 36,403.95-54,608.40-12,378.47

Finding the Fourth Proportional to 36,403.95, 54,608.40 and 12,378.47

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Solution

The fourth proportional to 36,403.95, 54,608.40 and 12,378.47 is: 18,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,403.95 : 54,608.40 = 12,378.47 : x
  2. Step 2: Convert to fraction form
    36,403.95/54,608.40 = 12,378.47/x
  3. Step 3: Cross multiply
    36,403.95x = 54,608.40 × 12,378.47
  4. Step 4: Simplify right side
    36,403.95x = 675,968,510.09
  5. Step 5: Solve for x
    x = 675,968,510.09/36,403.95
  6. Step 6: Final answer
    x = 18,568.55

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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.