Home / 20,088.39-27,710.40-12,531.09

Finding the Fourth Proportional to 20,088.39, 27,710.40 and 12,531.09

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Solution

The fourth proportional to 20,088.39, 27,710.40 and 12,531.09 is: 17,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.39 : 27,710.40 = 12,531.09 : x
  2. Step 2: Convert to fraction form
    20,088.39/27,710.40 = 12,531.09/x
  3. Step 3: Cross multiply
    20,088.39x = 27,710.40 × 12,531.09
  4. Step 4: Simplify right side
    20,088.39x = 347,241,516.34
  5. Step 5: Solve for x
    x = 347,241,516.34/20,088.39
  6. Step 6: Final answer
    x = 17,285.68

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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.