Home / 30,661.22-42,313.65-18,729.92

Finding the Fourth Proportional to 30,661.22, 42,313.65 and 18,729.92

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Solution

The fourth proportional to 30,661.22, 42,313.65 and 18,729.92 is: 25,848.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.22 : 42,313.65 = 18,729.92 : x
  2. Step 2: Convert to fraction form
    30,661.22/42,313.65 = 18,729.92/x
  3. Step 3: Cross multiply
    30,661.22x = 42,313.65 × 18,729.92
  4. Step 4: Simplify right side
    30,661.22x = 792,531,279.41
  5. Step 5: Solve for x
    x = 792,531,279.41/30,661.22
  6. Step 6: Final answer
    x = 25,848.00

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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.