Home / 13,835.67-20,742.88-7,165.05

Finding the Fourth Proportional to 13,835.67, 20,742.88 and 7,165.05

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Solution

The fourth proportional to 13,835.67, 20,742.88 and 7,165.05 is: 10,742.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,835.67 : 20,742.88 = 7,165.05 : x
  2. Step 2: Convert to fraction form
    13,835.67/20,742.88 = 7,165.05/x
  3. Step 3: Cross multiply
    13,835.67x = 20,742.88 × 7,165.05
  4. Step 4: Simplify right side
    13,835.67x = 148,623,632.80
  5. Step 5: Solve for x
    x = 148,623,632.80/13,835.67
  6. Step 6: Final answer
    x = 10,742.07

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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.