Home / 13,749.80-20,624.70-7,909.16

Finding the Fourth Proportional to 13,749.80, 20,624.70 and 7,909.16

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Solution

The fourth proportional to 13,749.80, 20,624.70 and 7,909.16 is: 11,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.80 : 20,624.70 = 7,909.16 : x
  2. Step 2: Convert to fraction form
    13,749.80/20,624.70 = 7,909.16/x
  3. Step 3: Cross multiply
    13,749.80x = 20,624.70 × 7,909.16
  4. Step 4: Simplify right side
    13,749.80x = 163,124,052.25
  5. Step 5: Solve for x
    x = 163,124,052.25/13,749.80
  6. Step 6: Final answer
    x = 11,863.74

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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.