Home / 30,926.50-42,678.68-16,779.44

Finding the Fourth Proportional to 30,926.50, 42,678.68 and 16,779.44

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Solution

The fourth proportional to 30,926.50, 42,678.68 and 16,779.44 is: 23,155.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.50 : 42,678.68 = 16,779.44 : x
  2. Step 2: Convert to fraction form
    30,926.50/42,678.68 = 16,779.44/x
  3. Step 3: Cross multiply
    30,926.50x = 42,678.68 × 16,779.44
  4. Step 4: Simplify right side
    30,926.50x = 716,124,373.14
  5. Step 5: Solve for x
    x = 716,124,373.14/30,926.50
  6. Step 6: Final answer
    x = 23,155.69

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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.