Home / 30,653.07-42,305.15-18,713.85

Finding the Fourth Proportional to 30,653.07, 42,305.15 and 18,713.85

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Solution

The fourth proportional to 30,653.07, 42,305.15 and 18,713.85 is: 25,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,653.07 : 42,305.15 = 18,713.85 : x
  2. Step 2: Convert to fraction form
    30,653.07/42,305.15 = 18,713.85/x
  3. Step 3: Cross multiply
    30,653.07x = 42,305.15 × 18,713.85
  4. Step 4: Simplify right side
    30,653.07x = 791,692,137.76
  5. Step 5: Solve for x
    x = 791,692,137.76/30,653.07
  6. Step 6: Final answer
    x = 25,827.50

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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.