Home / 21,705.04-29,944.13-14,148.72

Finding the Fourth Proportional to 21,705.04, 29,944.13 and 14,148.72

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Solution

The fourth proportional to 21,705.04, 29,944.13 and 14,148.72 is: 19,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.04 : 29,944.13 = 14,148.72 : x
  2. Step 2: Convert to fraction form
    21,705.04/29,944.13 = 14,148.72/x
  3. Step 3: Cross multiply
    21,705.04x = 29,944.13 × 14,148.72
  4. Step 4: Simplify right side
    21,705.04x = 423,670,996.66
  5. Step 5: Solve for x
    x = 423,670,996.66/21,705.04
  6. Step 6: Final answer
    x = 19,519.48

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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.