Home / 13,501.29-20,245.12-7,880.87

Finding the Fourth Proportional to 13,501.29, 20,245.12 and 7,880.87

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Solution

The fourth proportional to 13,501.29, 20,245.12 and 7,880.87 is: 11,817.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.29 : 20,245.12 = 7,880.87 : x
  2. Step 2: Convert to fraction form
    13,501.29/20,245.12 = 7,880.87/x
  3. Step 3: Cross multiply
    13,501.29x = 20,245.12 × 7,880.87
  4. Step 4: Simplify right side
    13,501.29x = 159,549,037.93
  5. Step 5: Solve for x
    x = 159,549,037.93/13,501.29
  6. Step 6: Final answer
    x = 11,817.32

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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.