Home / 13,712.63-18,934.12-10,520.85

Finding the Fourth Proportional to 13,712.63, 18,934.12 and 10,520.85

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Solution

The fourth proportional to 13,712.63, 18,934.12 and 10,520.85 is: 14,526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.63 : 18,934.12 = 10,520.85 : x
  2. Step 2: Convert to fraction form
    13,712.63/18,934.12 = 10,520.85/x
  3. Step 3: Cross multiply
    13,712.63x = 18,934.12 × 10,520.85
  4. Step 4: Simplify right side
    13,712.63x = 199,203,010.10
  5. Step 5: Solve for x
    x = 199,203,010.10/13,712.63
  6. Step 6: Final answer
    x = 14,526.98

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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.