Home / 13,579.34-18,740.36-7,529.84

Finding the Fourth Proportional to 13,579.34, 18,740.36 and 7,529.84

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Solution

The fourth proportional to 13,579.34, 18,740.36 and 7,529.84 is: 10,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.34 : 18,740.36 = 7,529.84 : x
  2. Step 2: Convert to fraction form
    13,579.34/18,740.36 = 7,529.84/x
  3. Step 3: Cross multiply
    13,579.34x = 18,740.36 × 7,529.84
  4. Step 4: Simplify right side
    13,579.34x = 141,111,907.74
  5. Step 5: Solve for x
    x = 141,111,907.74/13,579.34
  6. Step 6: Final answer
    x = 10,391.67

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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.