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Finding the Fourth Proportional to 27,803.86, 38,372.06 and 15,868.98

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Solution

The fourth proportional to 27,803.86, 38,372.06 and 15,868.98 is: 21,900.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,803.86 : 38,372.06 = 15,868.98 : x
  2. Step 2: Convert to fraction form
    27,803.86/38,372.06 = 15,868.98/x
  3. Step 3: Cross multiply
    27,803.86x = 38,372.06 × 15,868.98
  4. Step 4: Simplify right side
    27,803.86x = 608,925,492.37
  5. Step 5: Solve for x
    x = 608,925,492.37/27,803.86
  6. Step 6: Final answer
    x = 21,900.76

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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.