Home / 28,649.35-42,974.58-9,930

Finding the Fourth Proportional to 28,649.35, 42,974.58 and 9,930

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Solution

The fourth proportional to 28,649.35, 42,974.58 and 9,930 is: 14,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.35 : 42,974.58 = 9,930 : x
  2. Step 2: Convert to fraction form
    28,649.35/42,974.58 = 9,930/x
  3. Step 3: Cross multiply
    28,649.35x = 42,974.58 × 9,930
  4. Step 4: Simplify right side
    28,649.35x = 426,737,579.40
  5. Step 5: Solve for x
    x = 426,737,579.40/28,649.35
  6. Step 6: Final answer
    x = 14,895.19

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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.