Home / 21,246.18-29,320.26-11,815.34

Finding the Fourth Proportional to 21,246.18, 29,320.26 and 11,815.34

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Solution

The fourth proportional to 21,246.18, 29,320.26 and 11,815.34 is: 16,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.18 : 29,320.26 = 11,815.34 : x
  2. Step 2: Convert to fraction form
    21,246.18/29,320.26 = 11,815.34/x
  3. Step 3: Cross multiply
    21,246.18x = 29,320.26 × 11,815.34
  4. Step 4: Simplify right side
    21,246.18x = 346,428,840.79
  5. Step 5: Solve for x
    x = 346,428,840.79/21,246.18
  6. Step 6: Final answer
    x = 16,305.46

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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.