Home / 20,073.91-27,686.40-13,705.63

Finding the Fourth Proportional to 20,073.91, 27,686.40 and 13,705.63

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Solution

The fourth proportional to 20,073.91, 27,686.40 and 13,705.63 is: 18,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.91 : 27,686.40 = 13,705.63 : x
  2. Step 2: Convert to fraction form
    20,073.91/27,686.40 = 13,705.63/x
  3. Step 3: Cross multiply
    20,073.91x = 27,686.40 × 13,705.63
  4. Step 4: Simplify right side
    20,073.91x = 379,459,554.43
  5. Step 5: Solve for x
    x = 379,459,554.43/20,073.91
  6. Step 6: Final answer
    x = 18,903.12

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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.