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Finding the Fourth Proportional to 11,492.61, 15,861.53 and 7,018.98

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Solution

The fourth proportional to 11,492.61, 15,861.53 and 7,018.98 is: 9,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,492.61 : 15,861.53 = 7,018.98 : x
  2. Step 2: Convert to fraction form
    11,492.61/15,861.53 = 7,018.98/x
  3. Step 3: Cross multiply
    11,492.61x = 15,861.53 × 7,018.98
  4. Step 4: Simplify right side
    11,492.61x = 111,331,761.84
  5. Step 5: Solve for x
    x = 111,331,761.84/11,492.61
  6. Step 6: Final answer
    x = 9,687.25

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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.