Home / 13,376.36-18,457.56-7,406.56

Finding the Fourth Proportional to 13,376.36, 18,457.56 and 7,406.56

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Solution

The fourth proportional to 13,376.36, 18,457.56 and 7,406.56 is: 10,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.36 : 18,457.56 = 7,406.56 : x
  2. Step 2: Convert to fraction form
    13,376.36/18,457.56 = 7,406.56/x
  3. Step 3: Cross multiply
    13,376.36x = 18,457.56 × 7,406.56
  4. Step 4: Simplify right side
    13,376.36x = 136,707,025.59
  5. Step 5: Solve for x
    x = 136,707,025.59/13,376.36
  6. Step 6: Final answer
    x = 10,220.05

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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.