Home / 21,166.02-29,201.58-12,215.79

Finding the Fourth Proportional to 21,166.02, 29,201.58 and 12,215.79

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Solution

The fourth proportional to 21,166.02, 29,201.58 and 12,215.79 is: 16,853.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.02 : 29,201.58 = 12,215.79 : x
  2. Step 2: Convert to fraction form
    21,166.02/29,201.58 = 12,215.79/x
  3. Step 3: Cross multiply
    21,166.02x = 29,201.58 × 12,215.79
  4. Step 4: Simplify right side
    21,166.02x = 356,720,368.95
  5. Step 5: Solve for x
    x = 356,720,368.95/21,166.02
  6. Step 6: Final answer
    x = 16,853.45

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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.