Home / 30,973.80-42,743.90-16,826.66

Finding the Fourth Proportional to 30,973.80, 42,743.90 and 16,826.66

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Solution

The fourth proportional to 30,973.80, 42,743.90 and 16,826.66 is: 23,220.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,973.80 : 42,743.90 = 16,826.66 : x
  2. Step 2: Convert to fraction form
    30,973.80/42,743.90 = 16,826.66/x
  3. Step 3: Cross multiply
    30,973.80x = 42,743.90 × 16,826.66
  4. Step 4: Simplify right side
    30,973.80x = 719,236,774.52
  5. Step 5: Solve for x
    x = 719,236,774.52/30,973.80
  6. Step 6: Final answer
    x = 23,220.81

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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.