Home / 13,706.37-18,916.47-7,738.29

Finding the Fourth Proportional to 13,706.37, 18,916.47 and 7,738.29

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Solution

The fourth proportional to 13,706.37, 18,916.47 and 7,738.29 is: 10,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.37 : 18,916.47 = 7,738.29 : x
  2. Step 2: Convert to fraction form
    13,706.37/18,916.47 = 7,738.29/x
  3. Step 3: Cross multiply
    13,706.37x = 18,916.47 × 7,738.29
  4. Step 4: Simplify right side
    13,706.37x = 146,381,130.64
  5. Step 5: Solve for x
    x = 146,381,130.64/13,706.37
  6. Step 6: Final answer
    x = 10,679.79

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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.