Home / 30,378.72-41,921.66-16,580.53

Finding the Fourth Proportional to 30,378.72, 41,921.66 and 16,580.53

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Solution

The fourth proportional to 30,378.72, 41,921.66 and 16,580.53 is: 22,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.72 : 41,921.66 = 16,580.53 : x
  2. Step 2: Convert to fraction form
    30,378.72/41,921.66 = 16,580.53/x
  3. Step 3: Cross multiply
    30,378.72x = 41,921.66 × 16,580.53
  4. Step 4: Simplify right side
    30,378.72x = 695,083,106.06
  5. Step 5: Solve for x
    x = 695,083,106.06/30,378.72
  6. Step 6: Final answer
    x = 22,880.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.