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Finding the Fourth Proportional to 19,679.80, 29,471.08 and 14,670.16

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Solution

The fourth proportional to 19,679.80, 29,471.08 and 14,670.16 is: 21,969.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.80 : 29,471.08 = 14,670.16 : x
  2. Step 2: Convert to fraction form
    19,679.80/29,471.08 = 14,670.16/x
  3. Step 3: Cross multiply
    19,679.80x = 29,471.08 × 14,670.16
  4. Step 4: Simplify right side
    19,679.80x = 432,345,458.97
  5. Step 5: Solve for x
    x = 432,345,458.97/19,679.80
  6. Step 6: Final answer
    x = 21,969.00

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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.