Home / 18,910.95-28,369.81-6,430.33

Finding the Fourth Proportional to 18,910.95, 28,369.81 and 6,430.33

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Solution

The fourth proportional to 18,910.95, 28,369.81 and 6,430.33 is: 9,646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.95 : 28,369.81 = 6,430.33 : x
  2. Step 2: Convert to fraction form
    18,910.95/28,369.81 = 6,430.33/x
  3. Step 3: Cross multiply
    18,910.95x = 28,369.81 × 6,430.33
  4. Step 4: Simplify right side
    18,910.95x = 182,427,098.49
  5. Step 5: Solve for x
    x = 182,427,098.49/18,910.95
  6. Step 6: Final answer
    x = 9,646.64

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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.