Home / 30,826.82-42,538.55-18,888.51

Finding the Fourth Proportional to 30,826.82, 42,538.55 and 18,888.51

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Solution

The fourth proportional to 30,826.82, 42,538.55 and 18,888.51 is: 26,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,826.82 : 42,538.55 = 18,888.51 : x
  2. Step 2: Convert to fraction form
    30,826.82/42,538.55 = 18,888.51/x
  3. Step 3: Cross multiply
    30,826.82x = 42,538.55 × 18,888.51
  4. Step 4: Simplify right side
    30,826.82x = 803,489,732.62
  5. Step 5: Solve for x
    x = 803,489,732.62/30,826.82
  6. Step 6: Final answer
    x = 26,064.64

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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.