Home / 20,036.82-27,663.40-12,869.63

Finding the Fourth Proportional to 20,036.82, 27,663.40 and 12,869.63

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Solution

The fourth proportional to 20,036.82, 27,663.40 and 12,869.63 is: 17,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,036.82 : 27,663.40 = 12,869.63 : x
  2. Step 2: Convert to fraction form
    20,036.82/27,663.40 = 12,869.63/x
  3. Step 3: Cross multiply
    20,036.82x = 27,663.40 × 12,869.63
  4. Step 4: Simplify right side
    20,036.82x = 356,017,823.46
  5. Step 5: Solve for x
    x = 356,017,823.46/20,036.82
  6. Step 6: Final answer
    x = 17,768.18

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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.