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Finding the Fourth Proportional to 13,602.30, 20,418.02 and 7,026.72

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Solution

The fourth proportional to 13,602.30, 20,418.02 and 7,026.72 is: 10,547.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.30 : 20,418.02 = 7,026.72 : x
  2. Step 2: Convert to fraction form
    13,602.30/20,418.02 = 7,026.72/x
  3. Step 3: Cross multiply
    13,602.30x = 20,418.02 × 7,026.72
  4. Step 4: Simplify right side
    13,602.30x = 143,471,709.49
  5. Step 5: Solve for x
    x = 143,471,709.49/13,602.30
  6. Step 6: Final answer
    x = 10,547.61

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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.