Home / 30,927.30-42,679.67-16,780.14

Finding the Fourth Proportional to 30,927.30, 42,679.67 and 16,780.14

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Solution

The fourth proportional to 30,927.30, 42,679.67 and 16,780.14 is: 23,156.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,927.30 : 42,679.67 = 16,780.14 : x
  2. Step 2: Convert to fraction form
    30,927.30/42,679.67 = 16,780.14/x
  3. Step 3: Cross multiply
    30,927.30x = 42,679.67 × 16,780.14
  4. Step 4: Simplify right side
    30,927.30x = 716,170,837.75
  5. Step 5: Solve for x
    x = 716,170,837.75/30,927.30
  6. Step 6: Final answer
    x = 23,156.59

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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.