Home / 21,438.56-29,570.01-13,376.27

Finding the Fourth Proportional to 21,438.56, 29,570.01 and 13,376.27

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Solution

The fourth proportional to 21,438.56, 29,570.01 and 13,376.27 is: 18,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.56 : 29,570.01 = 13,376.27 : x
  2. Step 2: Convert to fraction form
    21,438.56/29,570.01 = 13,376.27/x
  3. Step 3: Cross multiply
    21,438.56x = 29,570.01 × 13,376.27
  4. Step 4: Simplify right side
    21,438.56x = 395,536,536.67
  5. Step 5: Solve for x
    x = 395,536,536.67/21,438.56
  6. Step 6: Final answer
    x = 18,449.77

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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.