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Finding the Fourth Proportional to 14,308.76, 21,457.74 and 6,910.76

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Solution

The fourth proportional to 14,308.76, 21,457.74 and 6,910.76 is: 10,363.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,308.76 : 21,457.74 = 6,910.76 : x
  2. Step 2: Convert to fraction form
    14,308.76/21,457.74 = 6,910.76/x
  3. Step 3: Cross multiply
    14,308.76x = 21,457.74 × 6,910.76
  4. Step 4: Simplify right side
    14,308.76x = 148,289,291.28
  5. Step 5: Solve for x
    x = 148,289,291.28/14,308.76
  6. Step 6: Final answer
    x = 10,363.53

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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.