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Finding the Fourth Proportional to 14,491.60, 21,751.80 and 7,104.40

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Solution

The fourth proportional to 14,491.60, 21,751.80 and 7,104.40 is: 10,663.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,491.60 : 21,751.80 = 7,104.40 : x
  2. Step 2: Convert to fraction form
    14,491.60/21,751.80 = 7,104.40/x
  3. Step 3: Cross multiply
    14,491.60x = 21,751.80 × 7,104.40
  4. Step 4: Simplify right side
    14,491.60x = 154,533,487.92
  5. Step 5: Solve for x
    x = 154,533,487.92/14,491.60
  6. Step 6: Final answer
    x = 10,663.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.