Home / 19,938.96-29,908.80-5,148

Finding the Fourth Proportional to 19,938.96, 29,908.80 and 5,148

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Solution

The fourth proportional to 19,938.96, 29,908.80 and 5,148 is: 7,722.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.96 : 29,908.80 = 5,148 : x
  2. Step 2: Convert to fraction form
    19,938.96/29,908.80 = 5,148/x
  3. Step 3: Cross multiply
    19,938.96x = 29,908.80 × 5,148
  4. Step 4: Simplify right side
    19,938.96x = 153,970,502.40
  5. Step 5: Solve for x
    x = 153,970,502.40/19,938.96
  6. Step 6: Final answer
    x = 7,722.09

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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.