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Finding the Fourth Proportional to 14,659.52, 20,230.40 and 7,945.28

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Solution

The fourth proportional to 14,659.52, 20,230.40 and 7,945.28 is: 10,964.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.52 : 20,230.40 = 7,945.28 : x
  2. Step 2: Convert to fraction form
    14,659.52/20,230.40 = 7,945.28/x
  3. Step 3: Cross multiply
    14,659.52x = 20,230.40 × 7,945.28
  4. Step 4: Simplify right side
    14,659.52x = 160,736,192.51
  5. Step 5: Solve for x
    x = 160,736,192.51/14,659.52
  6. Step 6: Final answer
    x = 10,964.63

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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.