Home / 21,454.32-29,608.58-13,503.36

Finding the Fourth Proportional to 21,454.32, 29,608.58 and 13,503.36

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Solution

The fourth proportional to 21,454.32, 29,608.58 and 13,503.36 is: 18,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.32 : 29,608.58 = 13,503.36 : x
  2. Step 2: Convert to fraction form
    21,454.32/29,608.58 = 13,503.36/x
  3. Step 3: Cross multiply
    21,454.32x = 29,608.58 × 13,503.36
  4. Step 4: Simplify right side
    21,454.32x = 399,815,247.31
  5. Step 5: Solve for x
    x = 399,815,247.31/21,454.32
  6. Step 6: Final answer
    x = 18,635.65

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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.