Home / 21,695.63-29,931.41-13,624.53

Finding the Fourth Proportional to 21,695.63, 29,931.41 and 13,624.53

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Solution

The fourth proportional to 21,695.63, 29,931.41 and 13,624.53 is: 18,796.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.63 : 29,931.41 = 13,624.53 : x
  2. Step 2: Convert to fraction form
    21,695.63/29,931.41 = 13,624.53/x
  3. Step 3: Cross multiply
    21,695.63x = 29,931.41 × 13,624.53
  4. Step 4: Simplify right side
    21,695.63x = 407,801,400.19
  5. Step 5: Solve for x
    x = 407,801,400.19/21,695.63
  6. Step 6: Final answer
    x = 18,796.48

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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.