Home / 13,440.49-18,548.09-7,390.98

Finding the Fourth Proportional to 13,440.49, 18,548.09 and 7,390.98

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Solution

The fourth proportional to 13,440.49, 18,548.09 and 7,390.98 is: 10,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.49 : 18,548.09 = 7,390.98 : x
  2. Step 2: Convert to fraction form
    13,440.49/18,548.09 = 7,390.98/x
  3. Step 3: Cross multiply
    13,440.49x = 18,548.09 × 7,390.98
  4. Step 4: Simplify right side
    13,440.49x = 137,088,562.23
  5. Step 5: Solve for x
    x = 137,088,562.23/13,440.49
  6. Step 6: Final answer
    x = 10,199.67

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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.