Home / 30,915.77-42,663.58-16,768.31

Finding the Fourth Proportional to 30,915.77, 42,663.58 and 16,768.31

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Solution

The fourth proportional to 30,915.77, 42,663.58 and 16,768.31 is: 23,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.77 : 42,663.58 = 16,768.31 : x
  2. Step 2: Convert to fraction form
    30,915.77/42,663.58 = 16,768.31/x
  3. Step 3: Cross multiply
    30,915.77x = 42,663.58 × 16,768.31
  4. Step 4: Simplify right side
    30,915.77x = 715,395,879.91
  5. Step 5: Solve for x
    x = 715,395,879.91/30,915.77
  6. Step 6: Final answer
    x = 23,140.16

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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.