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Finding the Fourth Proportional to 13,798.98, 19,041.84 and 8,491.86

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Solution

The fourth proportional to 13,798.98, 19,041.84 and 8,491.86 is: 11,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,798.98 : 19,041.84 = 8,491.86 : x
  2. Step 2: Convert to fraction form
    13,798.98/19,041.84 = 8,491.86/x
  3. Step 3: Cross multiply
    13,798.98x = 19,041.84 × 8,491.86
  4. Step 4: Simplify right side
    13,798.98x = 161,700,639.42
  5. Step 5: Solve for x
    x = 161,700,639.42/13,798.98
  6. Step 6: Final answer
    x = 11,718.30

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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.