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Finding the Fourth Proportional to 14,802.40, 20,385.84 and 14,479.84

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Solution

The fourth proportional to 14,802.40, 20,385.84 and 14,479.84 is: 19,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,802.40 : 20,385.84 = 14,479.84 : x
  2. Step 2: Convert to fraction form
    14,802.40/20,385.84 = 14,479.84/x
  3. Step 3: Cross multiply
    14,802.40x = 20,385.84 × 14,479.84
  4. Step 4: Simplify right side
    14,802.40x = 295,183,701.47
  5. Step 5: Solve for x
    x = 295,183,701.47/14,802.40
  6. Step 6: Final answer
    x = 19,941.61

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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.