Home / 30,829.18-42,541.82-18,890.89

Finding the Fourth Proportional to 30,829.18, 42,541.82 and 18,890.89

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Solution

The fourth proportional to 30,829.18, 42,541.82 and 18,890.89 is: 26,067.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,829.18 : 42,541.82 = 18,890.89 : x
  2. Step 2: Convert to fraction form
    30,829.18/42,541.82 = 18,890.89/x
  3. Step 3: Cross multiply
    30,829.18x = 42,541.82 × 18,890.89
  4. Step 4: Simplify right side
    30,829.18x = 803,652,842.02
  5. Step 5: Solve for x
    x = 803,652,842.02/30,829.18
  6. Step 6: Final answer
    x = 26,067.93

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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.