Home / 19,918.42-29,875.19-5,127.41

Finding the Fourth Proportional to 19,918.42, 29,875.19 and 5,127.41

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Solution

The fourth proportional to 19,918.42, 29,875.19 and 5,127.41 is: 7,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.42 : 29,875.19 = 5,127.41 : x
  2. Step 2: Convert to fraction form
    19,918.42/29,875.19 = 5,127.41/x
  3. Step 3: Cross multiply
    19,918.42x = 29,875.19 × 5,127.41
  4. Step 4: Simplify right side
    19,918.42x = 153,182,347.96
  5. Step 5: Solve for x
    x = 153,182,347.96/19,918.42
  6. Step 6: Final answer
    x = 7,690.49

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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.