Home / 12,943.86-19,415.80-5,543.54

Finding the Fourth Proportional to 12,943.86, 19,415.80 and 5,543.54

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Solution

The fourth proportional to 12,943.86, 19,415.80 and 5,543.54 is: 8,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.86 : 19,415.80 = 5,543.54 : x
  2. Step 2: Convert to fraction form
    12,943.86/19,415.80 = 5,543.54/x
  3. Step 3: Cross multiply
    12,943.86x = 19,415.80 × 5,543.54
  4. Step 4: Simplify right side
    12,943.86x = 107,632,263.93
  5. Step 5: Solve for x
    x = 107,632,263.93/12,943.86
  6. Step 6: Final answer
    x = 8,315.31

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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.