Home / 30,554.32-42,115.44-21,587.44

Finding the Fourth Proportional to 30,554.32, 42,115.44 and 21,587.44

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Solution

The fourth proportional to 30,554.32, 42,115.44 and 21,587.44 is: 29,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,554.32 : 42,115.44 = 21,587.44 : x
  2. Step 2: Convert to fraction form
    30,554.32/42,115.44 = 21,587.44/x
  3. Step 3: Cross multiply
    30,554.32x = 42,115.44 × 21,587.44
  4. Step 4: Simplify right side
    30,554.32x = 909,164,534.07
  5. Step 5: Solve for x
    x = 909,164,534.07/30,554.32
  6. Step 6: Final answer
    x = 29,755.68

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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.