Home / 13,421.84-20,118.98-4,651.96

Finding the Fourth Proportional to 13,421.84, 20,118.98 and 4,651.96

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Solution

The fourth proportional to 13,421.84, 20,118.98 and 4,651.96 is: 6,973.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.84 : 20,118.98 = 4,651.96 : x
  2. Step 2: Convert to fraction form
    13,421.84/20,118.98 = 4,651.96/x
  3. Step 3: Cross multiply
    13,421.84x = 20,118.98 × 4,651.96
  4. Step 4: Simplify right side
    13,421.84x = 93,592,690.20
  5. Step 5: Solve for x
    x = 93,592,690.20/13,421.84
  6. Step 6: Final answer
    x = 6,973.16

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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.