Home / 19,998.81-29,999.93-5,207.75

Finding the Fourth Proportional to 19,998.81, 29,999.93 and 5,207.75

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Solution

The fourth proportional to 19,998.81, 29,999.93 and 5,207.75 is: 7,812.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.81 : 29,999.93 = 5,207.75 : x
  2. Step 2: Convert to fraction form
    19,998.81/29,999.93 = 5,207.75/x
  3. Step 3: Cross multiply
    19,998.81x = 29,999.93 × 5,207.75
  4. Step 4: Simplify right side
    19,998.81x = 156,232,129.34
  5. Step 5: Solve for x
    x = 156,232,129.34/19,998.81
  6. Step 6: Final answer
    x = 7,812.07

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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.