Home / 30,927.42-42,678.70-16,779.96

Finding the Fourth Proportional to 30,927.42, 42,678.70 and 16,779.96

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Solution

The fourth proportional to 30,927.42, 42,678.70 and 16,779.96 is: 23,155.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,927.42 : 42,678.70 = 16,779.96 : x
  2. Step 2: Convert to fraction form
    30,927.42/42,678.70 = 16,779.96/x
  3. Step 3: Cross multiply
    30,927.42x = 42,678.70 × 16,779.96
  4. Step 4: Simplify right side
    30,927.42x = 716,146,836.90
  5. Step 5: Solve for x
    x = 716,146,836.90/30,927.42
  6. Step 6: Final answer
    x = 23,155.73

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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.