Home / 18,986.08-28,476.96-5,136.16

Finding the Fourth Proportional to 18,986.08, 28,476.96 and 5,136.16

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Solution

The fourth proportional to 18,986.08, 28,476.96 and 5,136.16 is: 7,703.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.08 : 28,476.96 = 5,136.16 : x
  2. Step 2: Convert to fraction form
    18,986.08/28,476.96 = 5,136.16/x
  3. Step 3: Cross multiply
    18,986.08x = 28,476.96 × 5,136.16
  4. Step 4: Simplify right side
    18,986.08x = 146,262,222.87
  5. Step 5: Solve for x
    x = 146,262,222.87/18,986.08
  6. Step 6: Final answer
    x = 7,703.66

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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.