Home / 21,299.36-29,364.45-14,917.34

Finding the Fourth Proportional to 21,299.36, 29,364.45 and 14,917.34

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Solution

The fourth proportional to 21,299.36, 29,364.45 and 14,917.34 is: 20,565.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.36 : 29,364.45 = 14,917.34 : x
  2. Step 2: Convert to fraction form
    21,299.36/29,364.45 = 14,917.34/x
  3. Step 3: Cross multiply
    21,299.36x = 29,364.45 × 14,917.34
  4. Step 4: Simplify right side
    21,299.36x = 438,039,484.56
  5. Step 5: Solve for x
    x = 438,039,484.56/21,299.36
  6. Step 6: Final answer
    x = 20,565.85

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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.