Home / 30,926.30-42,678.29-16,779.14

Finding the Fourth Proportional to 30,926.30, 42,678.29 and 16,779.14

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Solution

The fourth proportional to 30,926.30, 42,678.29 and 16,779.14 is: 23,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.30 : 42,678.29 = 16,779.14 : x
  2. Step 2: Convert to fraction form
    30,926.30/42,678.29 = 16,779.14/x
  3. Step 3: Cross multiply
    30,926.30x = 42,678.29 × 16,779.14
  4. Step 4: Simplify right side
    30,926.30x = 716,105,151.51
  5. Step 5: Solve for x
    x = 716,105,151.51/30,926.30
  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.