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Finding the Fourth Proportional to 14,528.28, 20,026.28 and 9,489.98

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Solution

The fourth proportional to 14,528.28, 20,026.28 and 9,489.98 is: 13,081.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,528.28 : 20,026.28 = 9,489.98 : x
  2. Step 2: Convert to fraction form
    14,528.28/20,026.28 = 9,489.98/x
  3. Step 3: Cross multiply
    14,528.28x = 20,026.28 × 9,489.98
  4. Step 4: Simplify right side
    14,528.28x = 190,048,996.67
  5. Step 5: Solve for x
    x = 190,048,996.67/14,528.28
  6. Step 6: Final answer
    x = 13,081.31

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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.