Home / 13,642.20-20,450.88-4,875.06

Finding the Fourth Proportional to 13,642.20, 20,450.88 and 4,875.06

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Solution

The fourth proportional to 13,642.20, 20,450.88 and 4,875.06 is: 7,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.20 : 20,450.88 = 4,875.06 : x
  2. Step 2: Convert to fraction form
    13,642.20/20,450.88 = 4,875.06/x
  3. Step 3: Cross multiply
    13,642.20x = 20,450.88 × 4,875.06
  4. Step 4: Simplify right side
    13,642.20x = 99,699,267.05
  5. Step 5: Solve for x
    x = 99,699,267.05/13,642.20
  6. Step 6: Final answer
    x = 7,308.15

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1.5x scale

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.