Home / 30,927.31-42,679.64-16,780.15

Finding the Fourth Proportional to 30,927.31, 42,679.64 and 16,780.15

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Solution

The fourth proportional to 30,927.31, 42,679.64 and 16,780.15 is: 23,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,927.31 : 42,679.64 = 16,780.15 : x
  2. Step 2: Convert to fraction form
    30,927.31/42,679.64 = 16,780.15/x
  3. Step 3: Cross multiply
    30,927.31x = 42,679.64 × 16,780.15
  4. Step 4: Simplify right side
    30,927.31x = 716,170,677.25
  5. Step 5: Solve for x
    x = 716,170,677.25/30,927.31
  6. Step 6: Final answer
    x = 23,156.58

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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.