Home / 19,979.06-29,968.65-5,188.10

Finding the Fourth Proportional to 19,979.06, 29,968.65 and 5,188.10

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Solution

The fourth proportional to 19,979.06, 29,968.65 and 5,188.10 is: 7,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.06 : 29,968.65 = 5,188.10 : x
  2. Step 2: Convert to fraction form
    19,979.06/29,968.65 = 5,188.10/x
  3. Step 3: Cross multiply
    19,979.06x = 29,968.65 × 5,188.10
  4. Step 4: Simplify right side
    19,979.06x = 155,480,327.12
  5. Step 5: Solve for x
    x = 155,480,327.12/19,979.06
  6. Step 6: Final answer
    x = 7,782.16

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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.