Home / 15,457.15-21,314.83-13,226.41

Finding the Fourth Proportional to 15,457.15, 21,314.83 and 13,226.41

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Solution

The fourth proportional to 15,457.15, 21,314.83 and 13,226.41 is: 18,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.15 : 21,314.83 = 13,226.41 : x
  2. Step 2: Convert to fraction form
    15,457.15/21,314.83 = 13,226.41/x
  3. Step 3: Cross multiply
    15,457.15x = 21,314.83 × 13,226.41
  4. Step 4: Simplify right side
    15,457.15x = 281,918,680.66
  5. Step 5: Solve for x
    x = 281,918,680.66/15,457.15
  6. Step 6: Final answer
    x = 18,238.72

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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.