Home / 28,030.11-42,092.78-18,729.89

Finding the Fourth Proportional to 28,030.11, 42,092.78 and 18,729.89

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Solution

The fourth proportional to 28,030.11, 42,092.78 and 18,729.89 is: 28,126.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.11 : 42,092.78 = 18,729.89 : x
  2. Step 2: Convert to fraction form
    28,030.11/42,092.78 = 18,729.89/x
  3. Step 3: Cross multiply
    28,030.11x = 42,092.78 × 18,729.89
  4. Step 4: Simplify right side
    28,030.11x = 788,392,835.08
  5. Step 5: Solve for x
    x = 788,392,835.08/28,030.11
  6. Step 6: Final answer
    x = 28,126.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.