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Finding the Fourth Proportional to 11,360.40, 17,021.40 and 9,709.20

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Solution

The fourth proportional to 11,360.40, 17,021.40 and 9,709.20 is: 14,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,360.40 : 17,021.40 = 9,709.20 : x
  2. Step 2: Convert to fraction form
    11,360.40/17,021.40 = 9,709.20/x
  3. Step 3: Cross multiply
    11,360.40x = 17,021.40 × 9,709.20
  4. Step 4: Simplify right side
    11,360.40x = 165,264,176.88
  5. Step 5: Solve for x
    x = 165,264,176.88/11,360.40
  6. Step 6: Final answer
    x = 14,547.39

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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.