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Finding the Fourth Proportional to 14,048.68, 21,055.74 and 7,119.40

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Solution

The fourth proportional to 14,048.68, 21,055.74 and 7,119.40 is: 10,670.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,048.68 : 21,055.74 = 7,119.40 : x
  2. Step 2: Convert to fraction form
    14,048.68/21,055.74 = 7,119.40/x
  3. Step 3: Cross multiply
    14,048.68x = 21,055.74 × 7,119.40
  4. Step 4: Simplify right side
    14,048.68x = 149,904,235.36
  5. Step 5: Solve for x
    x = 149,904,235.36/14,048.68
  6. Step 6: Final answer
    x = 10,670.34

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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.