Home / 13,670.02-18,861.14-8,362.90

Finding the Fourth Proportional to 13,670.02, 18,861.14 and 8,362.90

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Solution

The fourth proportional to 13,670.02, 18,861.14 and 8,362.90 is: 11,538.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.02 : 18,861.14 = 8,362.90 : x
  2. Step 2: Convert to fraction form
    13,670.02/18,861.14 = 8,362.90/x
  3. Step 3: Cross multiply
    13,670.02x = 18,861.14 × 8,362.90
  4. Step 4: Simplify right side
    13,670.02x = 157,733,827.71
  5. Step 5: Solve for x
    x = 157,733,827.71/13,670.02
  6. Step 6: Final answer
    x = 11,538.67

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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.