Home / 13,715.34-18,927.20-7,427.72

Finding the Fourth Proportional to 13,715.34, 18,927.20 and 7,427.72

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Solution

The fourth proportional to 13,715.34, 18,927.20 and 7,427.72 is: 10,250.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.34 : 18,927.20 = 7,427.72 : x
  2. Step 2: Convert to fraction form
    13,715.34/18,927.20 = 7,427.72/x
  3. Step 3: Cross multiply
    13,715.34x = 18,927.20 × 7,427.72
  4. Step 4: Simplify right side
    13,715.34x = 140,585,941.98
  5. Step 5: Solve for x
    x = 140,585,941.98/13,715.34
  6. Step 6: Final answer
    x = 10,250.27

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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.