Home / 13,113.21-18,103.07-10,235.76

Finding the Fourth Proportional to 13,113.21, 18,103.07 and 10,235.76

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Solution

The fourth proportional to 13,113.21, 18,103.07 and 10,235.76 is: 14,130.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.21 : 18,103.07 = 10,235.76 : x
  2. Step 2: Convert to fraction form
    13,113.21/18,103.07 = 10,235.76/x
  3. Step 3: Cross multiply
    13,113.21x = 18,103.07 × 10,235.76
  4. Step 4: Simplify right side
    13,113.21x = 185,298,679.78
  5. Step 5: Solve for x
    x = 185,298,679.78/13,113.21
  6. Step 6: Final answer
    x = 14,130.69

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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.