Home / 13,319.48-19,979.01-7,705.58

Finding the Fourth Proportional to 13,319.48, 19,979.01 and 7,705.58

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Solution

The fourth proportional to 13,319.48, 19,979.01 and 7,705.58 is: 11,558.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.48 : 19,979.01 = 7,705.58 : x
  2. Step 2: Convert to fraction form
    13,319.48/19,979.01 = 7,705.58/x
  3. Step 3: Cross multiply
    13,319.48x = 19,979.01 × 7,705.58
  4. Step 4: Simplify right side
    13,319.48x = 153,949,759.98
  5. Step 5: Solve for x
    x = 153,949,759.98/13,319.48
  6. Step 6: Final answer
    x = 11,558.24

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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.