Home / 13,421.84-20,132.15-4,657.43

Finding the Fourth Proportional to 13,421.84, 20,132.15 and 4,657.43

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Solution

The fourth proportional to 13,421.84, 20,132.15 and 4,657.43 is: 6,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.84 : 20,132.15 = 4,657.43 : x
  2. Step 2: Convert to fraction form
    13,421.84/20,132.15 = 4,657.43/x
  3. Step 3: Cross multiply
    13,421.84x = 20,132.15 × 4,657.43
  4. Step 4: Simplify right side
    13,421.84x = 93,764,106.42
  5. Step 5: Solve for x
    x = 93,764,106.42/13,421.84
  6. Step 6: Final answer
    x = 6,985.94

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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.