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Finding the Fourth Proportional to 14,368.78, 19,829.10 and 7,994.80

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Solution

The fourth proportional to 14,368.78, 19,829.10 and 7,994.80 is: 11,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,368.78 : 19,829.10 = 7,994.80 : x
  2. Step 2: Convert to fraction form
    14,368.78/19,829.10 = 7,994.80/x
  3. Step 3: Cross multiply
    14,368.78x = 19,829.10 × 7,994.80
  4. Step 4: Simplify right side
    14,368.78x = 158,529,688.68
  5. Step 5: Solve for x
    x = 158,529,688.68/14,368.78
  6. Step 6: Final answer
    x = 11,032.93

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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.