Home / 18,690.68-28,041.43-5,543.37

Finding the Fourth Proportional to 18,690.68, 28,041.43 and 5,543.37

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Solution

The fourth proportional to 18,690.68, 28,041.43 and 5,543.37 is: 8,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.68 : 28,041.43 = 5,543.37 : x
  2. Step 2: Convert to fraction form
    18,690.68/28,041.43 = 5,543.37/x
  3. Step 3: Cross multiply
    18,690.68x = 28,041.43 × 5,543.37
  4. Step 4: Simplify right side
    18,690.68x = 155,444,021.82
  5. Step 5: Solve for x
    x = 155,444,021.82/18,690.68
  6. Step 6: Final answer
    x = 8,316.66

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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.