Home / 14,272.81-21,408.81-5,509.63

Finding the Fourth Proportional to 14,272.81, 21,408.81 and 5,509.63

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Solution

The fourth proportional to 14,272.81, 21,408.81 and 5,509.63 is: 8,264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.81 : 21,408.81 = 5,509.63 : x
  2. Step 2: Convert to fraction form
    14,272.81/21,408.81 = 5,509.63/x
  3. Step 3: Cross multiply
    14,272.81x = 21,408.81 × 5,509.63
  4. Step 4: Simplify right side
    14,272.81x = 117,954,621.84
  5. Step 5: Solve for x
    x = 117,954,621.84/14,272.81
  6. Step 6: Final answer
    x = 8,264.29

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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.