Home / 19,187.31-26,457.33-13,138.56

Finding the Fourth Proportional to 19,187.31, 26,457.33 and 13,138.56

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Solution

The fourth proportional to 19,187.31, 26,457.33 and 13,138.56 is: 18,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.31 : 26,457.33 = 13,138.56 : x
  2. Step 2: Convert to fraction form
    19,187.31/26,457.33 = 13,138.56/x
  3. Step 3: Cross multiply
    19,187.31x = 26,457.33 × 13,138.56
  4. Step 4: Simplify right side
    19,187.31x = 347,611,217.64
  5. Step 5: Solve for x
    x = 347,611,217.64/19,187.31
  6. Step 6: Final answer
    x = 18,116.72

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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.