Home / 30,911.74-42,657.96-16,764.58

Finding the Fourth Proportional to 30,911.74, 42,657.96 and 16,764.58

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Solution

The fourth proportional to 30,911.74, 42,657.96 and 16,764.58 is: 23,134.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.74 : 42,657.96 = 16,764.58 : x
  2. Step 2: Convert to fraction form
    30,911.74/42,657.96 = 16,764.58/x
  3. Step 3: Cross multiply
    30,911.74x = 42,657.96 × 16,764.58
  4. Step 4: Simplify right side
    30,911.74x = 715,142,783.06
  5. Step 5: Solve for x
    x = 715,142,783.06/30,911.74
  6. Step 6: Final answer
    x = 23,134.99

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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.