Home / 21,051.65-29,038.28-12,548.04

Finding the Fourth Proportional to 21,051.65, 29,038.28 and 12,548.04

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Solution

The fourth proportional to 21,051.65, 29,038.28 and 12,548.04 is: 17,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.65 : 29,038.28 = 12,548.04 : x
  2. Step 2: Convert to fraction form
    21,051.65/29,038.28 = 12,548.04/x
  3. Step 3: Cross multiply
    21,051.65x = 29,038.28 × 12,548.04
  4. Step 4: Simplify right side
    21,051.65x = 364,373,436.23
  5. Step 5: Solve for x
    x = 364,373,436.23/21,051.65
  6. Step 6: Final answer
    x = 17,308.55

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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.