Home / 30,926.23-42,678.39-16,779.07

Finding the Fourth Proportional to 30,926.23, 42,678.39 and 16,779.07

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Solution

The fourth proportional to 30,926.23, 42,678.39 and 16,779.07 is: 23,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.23 : 42,678.39 = 16,779.07 : x
  2. Step 2: Convert to fraction form
    30,926.23/42,678.39 = 16,779.07/x
  3. Step 3: Cross multiply
    30,926.23x = 42,678.39 × 16,779.07
  4. Step 4: Simplify right side
    30,926.23x = 716,103,693.30
  5. Step 5: Solve for x
    x = 716,103,693.30/30,926.23
  6. Step 6: Final answer
    x = 23,155.22

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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.