Home / 30,515.94-45,778.16-13,880.16

Finding the Fourth Proportional to 30,515.94, 45,778.16 and 13,880.16

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Solution

The fourth proportional to 30,515.94, 45,778.16 and 13,880.16 is: 20,822.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.94 : 45,778.16 = 13,880.16 : x
  2. Step 2: Convert to fraction form
    30,515.94/45,778.16 = 13,880.16/x
  3. Step 3: Cross multiply
    30,515.94x = 45,778.16 × 13,880.16
  4. Step 4: Simplify right side
    30,515.94x = 635,408,220.01
  5. Step 5: Solve for x
    x = 635,408,220.01/30,515.94
  6. Step 6: Final answer
    x = 20,822.17

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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.