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Finding the Fourth Proportional to 11,271.80, 15,554.99 and 6,303.80

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Solution

The fourth proportional to 11,271.80, 15,554.99 and 6,303.80 is: 8,699.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.80 : 15,554.99 = 6,303.80 : x
  2. Step 2: Convert to fraction form
    11,271.80/15,554.99 = 6,303.80/x
  3. Step 3: Cross multiply
    11,271.80x = 15,554.99 × 6,303.80
  4. Step 4: Simplify right side
    11,271.80x = 98,055,483.95
  5. Step 5: Solve for x
    x = 98,055,483.95/11,271.80
  6. Step 6: Final answer
    x = 8,699.19

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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.