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Finding the Fourth Proportional to 14,678.92, 20,242.00 and 12,561.48

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Solution

The fourth proportional to 14,678.92, 20,242.00 and 12,561.48 is: 17,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.92 : 20,242.00 = 12,561.48 : x
  2. Step 2: Convert to fraction form
    14,678.92/20,242.00 = 12,561.48/x
  3. Step 3: Cross multiply
    14,678.92x = 20,242.00 × 12,561.48
  4. Step 4: Simplify right side
    14,678.92x = 254,269,493.86
  5. Step 5: Solve for x
    x = 254,269,493.86/14,678.92
  6. Step 6: Final answer
    x = 17,322.08

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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.