Home / 18,866.98-28,298.84-6,386.74

Finding the Fourth Proportional to 18,866.98, 28,298.84 and 6,386.74

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Solution

The fourth proportional to 18,866.98, 28,298.84 and 6,386.74 is: 9,579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.98 : 28,298.84 = 6,386.74 : x
  2. Step 2: Convert to fraction form
    18,866.98/28,298.84 = 6,386.74/x
  3. Step 3: Cross multiply
    18,866.98x = 28,298.84 × 6,386.74
  4. Step 4: Simplify right side
    18,866.98x = 180,737,333.38
  5. Step 5: Solve for x
    x = 180,737,333.38/18,866.98
  6. Step 6: Final answer
    x = 9,579.56

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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.