Home / 13,318.60-19,843.85-13,128.52

Finding the Fourth Proportional to 13,318.60, 19,843.85 and 13,128.52

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Solution

The fourth proportional to 13,318.60, 19,843.85 and 13,128.52 is: 19,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.60 : 19,843.85 = 13,128.52 : x
  2. Step 2: Convert to fraction form
    13,318.60/19,843.85 = 13,128.52/x
  3. Step 3: Cross multiply
    13,318.60x = 19,843.85 × 13,128.52
  4. Step 4: Simplify right side
    13,318.60x = 260,520,381.60
  5. Step 5: Solve for x
    x = 260,520,381.60/13,318.60
  6. Step 6: Final answer
    x = 19,560.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.