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Finding the Fourth Proportional to 9,779.51, 13,477.09 and 9,599.58

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Solution

The fourth proportional to 9,779.51, 13,477.09 and 9,599.58 is: 13,229.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.51 : 13,477.09 = 9,599.58 : x
  2. Step 2: Convert to fraction form
    9,779.51/13,477.09 = 9,599.58/x
  3. Step 3: Cross multiply
    9,779.51x = 13,477.09 × 9,599.58
  4. Step 4: Simplify right side
    9,779.51x = 129,374,403.62
  5. Step 5: Solve for x
    x = 129,374,403.62/9,779.51
  6. Step 6: Final answer
    x = 13,229.13

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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.