Home / 21,175.56-29,219.58-12,223.08

Finding the Fourth Proportional to 21,175.56, 29,219.58 and 12,223.08

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Solution

The fourth proportional to 21,175.56, 29,219.58 and 12,223.08 is: 16,866.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.56 : 29,219.58 = 12,223.08 : x
  2. Step 2: Convert to fraction form
    21,175.56/29,219.58 = 12,223.08/x
  3. Step 3: Cross multiply
    21,175.56x = 29,219.58 × 12,223.08
  4. Step 4: Simplify right side
    21,175.56x = 357,153,263.91
  5. Step 5: Solve for x
    x = 357,153,263.91/21,175.56
  6. Step 6: Final answer
    x = 16,866.30

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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.