Home / 30,845.40-42,566.70-16,698.21

Finding the Fourth Proportional to 30,845.40, 42,566.70 and 16,698.21

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Solution

The fourth proportional to 30,845.40, 42,566.70 and 16,698.21 is: 23,043.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,845.40 : 42,566.70 = 16,698.21 : x
  2. Step 2: Convert to fraction form
    30,845.40/42,566.70 = 16,698.21/x
  3. Step 3: Cross multiply
    30,845.40x = 42,566.70 × 16,698.21
  4. Step 4: Simplify right side
    30,845.40x = 710,787,695.61
  5. Step 5: Solve for x
    x = 710,787,695.61/30,845.40
  6. Step 6: Final answer
    x = 23,043.56

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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.