Home / 30,554.88-42,140.16-19,936.32

Finding the Fourth Proportional to 30,554.88, 42,140.16 and 19,936.32

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Solution

The fourth proportional to 30,554.88, 42,140.16 and 19,936.32 is: 27,495.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,554.88 : 42,140.16 = 19,936.32 : x
  2. Step 2: Convert to fraction form
    30,554.88/42,140.16 = 19,936.32/x
  3. Step 3: Cross multiply
    30,554.88x = 42,140.16 × 19,936.32
  4. Step 4: Simplify right side
    30,554.88x = 840,119,714.61
  5. Step 5: Solve for x
    x = 840,119,714.61/30,554.88
  6. Step 6: Final answer
    x = 27,495.43

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Double scale
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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.