Home / 19,421.40-29,140.20-6,277.80

Finding the Fourth Proportional to 19,421.40, 29,140.20 and 6,277.80

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Solution

The fourth proportional to 19,421.40, 29,140.20 and 6,277.80 is: 9,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.40 : 29,140.20 = 6,277.80 : x
  2. Step 2: Convert to fraction form
    19,421.40/29,140.20 = 6,277.80/x
  3. Step 3: Cross multiply
    19,421.40x = 29,140.20 × 6,277.80
  4. Step 4: Simplify right side
    19,421.40x = 182,936,347.56
  5. Step 5: Solve for x
    x = 182,936,347.56/19,421.40
  6. Step 6: Final answer
    x = 9,419.32

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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.