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Finding the Fourth Proportional to 14,047.68, 21,054.24 and 7,118.40

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Solution

The fourth proportional to 14,047.68, 21,054.24 and 7,118.40 is: 10,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.68 : 21,054.24 = 7,118.40 : x
  2. Step 2: Convert to fraction form
    14,047.68/21,054.24 = 7,118.40/x
  3. Step 3: Cross multiply
    14,047.68x = 21,054.24 × 7,118.40
  4. Step 4: Simplify right side
    14,047.68x = 149,872,502.02
  5. Step 5: Solve for x
    x = 149,872,502.02/14,047.68
  6. Step 6: Final answer
    x = 10,668.84

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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.