Home / 13,690.30-18,892.62-7,402.66

Finding the Fourth Proportional to 13,690.30, 18,892.62 and 7,402.66

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Solution

The fourth proportional to 13,690.30, 18,892.62 and 7,402.66 is: 10,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.30 : 18,892.62 = 7,402.66 : x
  2. Step 2: Convert to fraction form
    13,690.30/18,892.62 = 7,402.66/x
  3. Step 3: Cross multiply
    13,690.30x = 18,892.62 × 7,402.66
  4. Step 4: Simplify right side
    13,690.30x = 139,855,642.37
  5. Step 5: Solve for x
    x = 139,855,642.37/13,690.30
  6. Step 6: Final answer
    x = 10,215.67

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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.