Home / 30,988.96-42,765.60-16,842.76

Finding the Fourth Proportional to 30,988.96, 42,765.60 and 16,842.76

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Solution

The fourth proportional to 30,988.96, 42,765.60 and 16,842.76 is: 23,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,988.96 : 42,765.60 = 16,842.76 : x
  2. Step 2: Convert to fraction form
    30,988.96/42,765.60 = 16,842.76/x
  3. Step 3: Cross multiply
    30,988.96x = 42,765.60 × 16,842.76
  4. Step 4: Simplify right side
    30,988.96x = 720,290,737.06
  5. Step 5: Solve for x
    x = 720,290,737.06/30,988.96
  6. Step 6: Final answer
    x = 23,243.46

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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.