Home / 30,989.36-46,502.26-12,271.20

Finding the Fourth Proportional to 30,989.36, 46,502.26 and 12,271.20

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Solution

The fourth proportional to 30,989.36, 46,502.26 and 12,271.20 is: 18,414.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.36 : 46,502.26 = 12,271.20 : x
  2. Step 2: Convert to fraction form
    30,989.36/46,502.26 = 12,271.20/x
  3. Step 3: Cross multiply
    30,989.36x = 46,502.26 × 12,271.20
  4. Step 4: Simplify right side
    30,989.36x = 570,638,532.91
  5. Step 5: Solve for x
    x = 570,638,532.91/30,989.36
  6. Step 6: Final answer
    x = 18,414.01

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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.