Home / 13,670.40-18,861.22-8,897.37

Finding the Fourth Proportional to 13,670.40, 18,861.22 and 8,897.37

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Solution

The fourth proportional to 13,670.40, 18,861.22 and 8,897.37 is: 12,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.40 : 18,861.22 = 8,897.37 : x
  2. Step 2: Convert to fraction form
    13,670.40/18,861.22 = 8,897.37/x
  3. Step 3: Cross multiply
    13,670.40x = 18,861.22 × 8,897.37
  4. Step 4: Simplify right side
    13,670.40x = 167,815,114.20
  5. Step 5: Solve for x
    x = 167,815,114.20/13,670.40
  6. Step 6: Final answer
    x = 12,275.80

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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.