Home / 30,821.55-42,531.31-18,883.26

Finding the Fourth Proportional to 30,821.55, 42,531.31 and 18,883.26

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Solution

The fourth proportional to 30,821.55, 42,531.31 and 18,883.26 is: 26,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,821.55 : 42,531.31 = 18,883.26 : x
  2. Step 2: Convert to fraction form
    30,821.55/42,531.31 = 18,883.26/x
  3. Step 3: Cross multiply
    30,821.55x = 42,531.31 × 18,883.26
  4. Step 4: Simplify right side
    30,821.55x = 803,129,808.47
  5. Step 5: Solve for x
    x = 803,129,808.47/30,821.55
  6. Step 6: Final answer
    x = 26,057.41

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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.