Home / 18,986.49-28,476.45-5,132.25

Finding the Fourth Proportional to 18,986.49, 28,476.45 and 5,132.25

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Solution

The fourth proportional to 18,986.49, 28,476.45 and 5,132.25 is: 7,697.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.49 : 28,476.45 = 5,132.25 : x
  2. Step 2: Convert to fraction form
    18,986.49/28,476.45 = 5,132.25/x
  3. Step 3: Cross multiply
    18,986.49x = 28,476.45 × 5,132.25
  4. Step 4: Simplify right side
    18,986.49x = 146,148,260.51
  5. Step 5: Solve for x
    x = 146,148,260.51/18,986.49
  6. Step 6: Final answer
    x = 7,697.49

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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.