Home / 22,071.36-30,457.92-12,639.36

Finding the Fourth Proportional to 22,071.36, 30,457.92 and 12,639.36

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Solution

The fourth proportional to 22,071.36, 30,457.92 and 12,639.36 is: 17,442.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,071.36 : 30,457.92 = 12,639.36 : x
  2. Step 2: Convert to fraction form
    22,071.36/30,457.92 = 12,639.36/x
  3. Step 3: Cross multiply
    22,071.36x = 30,457.92 × 12,639.36
  4. Step 4: Simplify right side
    22,071.36x = 384,968,615.73
  5. Step 5: Solve for x
    x = 384,968,615.73/22,071.36
  6. Step 6: Final answer
    x = 17,442.00

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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.