Home / 13,425.40-20,118.30-9,735.40

Finding the Fourth Proportional to 13,425.40, 20,118.30 and 9,735.40

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Solution

The fourth proportional to 13,425.40, 20,118.30 and 9,735.40 is: 14,588.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.40 : 20,118.30 = 9,735.40 : x
  2. Step 2: Convert to fraction form
    13,425.40/20,118.30 = 9,735.40/x
  3. Step 3: Cross multiply
    13,425.40x = 20,118.30 × 9,735.40
  4. Step 4: Simplify right side
    13,425.40x = 195,859,697.82
  5. Step 5: Solve for x
    x = 195,859,697.82/13,425.40
  6. Step 6: Final answer
    x = 14,588.74

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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.