Home / 13,649.40-18,830.34-9,874.80

Finding the Fourth Proportional to 13,649.40, 18,830.34 and 9,874.80

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Solution

The fourth proportional to 13,649.40, 18,830.34 and 9,874.80 is: 13,623.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.40 : 18,830.34 = 9,874.80 : x
  2. Step 2: Convert to fraction form
    13,649.40/18,830.34 = 9,874.80/x
  3. Step 3: Cross multiply
    13,649.40x = 18,830.34 × 9,874.80
  4. Step 4: Simplify right side
    13,649.40x = 185,945,841.43
  5. Step 5: Solve for x
    x = 185,945,841.43/13,649.40
  6. Step 6: Final answer
    x = 13,623.00

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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.