Home / 13,353.12-18,421.68-9,376.80

Finding the Fourth Proportional to 13,353.12, 18,421.68 and 9,376.80

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Solution

The fourth proportional to 13,353.12, 18,421.68 and 9,376.80 is: 12,936.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.12 : 18,421.68 = 9,376.80 : x
  2. Step 2: Convert to fraction form
    13,353.12/18,421.68 = 9,376.80/x
  3. Step 3: Cross multiply
    13,353.12x = 18,421.68 × 9,376.80
  4. Step 4: Simplify right side
    13,353.12x = 172,736,409.02
  5. Step 5: Solve for x
    x = 172,736,409.02/13,353.12
  6. Step 6: Final answer
    x = 12,936.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.