Home / 30,926.84-42,679.31-16,779.96

Finding the Fourth Proportional to 30,926.84, 42,679.31 and 16,779.96

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Solution

The fourth proportional to 30,926.84, 42,679.31 and 16,779.96 is: 23,156.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.84 : 42,679.31 = 16,779.96 : x
  2. Step 2: Convert to fraction form
    30,926.84/42,679.31 = 16,779.96/x
  3. Step 3: Cross multiply
    30,926.84x = 42,679.31 × 16,779.96
  4. Step 4: Simplify right side
    30,926.84x = 716,157,030.73
  5. Step 5: Solve for x
    x = 716,157,030.73/30,926.84
  6. Step 6: Final answer
    x = 23,156.49

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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.