Home / 15,828.80-21,844.76-9,114.30

Finding the Fourth Proportional to 15,828.80, 21,844.76 and 9,114.30

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Solution

The fourth proportional to 15,828.80, 21,844.76 and 9,114.30 is: 12,578.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.80 : 21,844.76 = 9,114.30 : x
  2. Step 2: Convert to fraction form
    15,828.80/21,844.76 = 9,114.30/x
  3. Step 3: Cross multiply
    15,828.80x = 21,844.76 × 9,114.30
  4. Step 4: Simplify right side
    15,828.80x = 199,099,650.50
  5. Step 5: Solve for x
    x = 199,099,650.50/15,828.80
  6. Step 6: Final answer
    x = 12,578.32

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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.