Home / 15,304.68-21,129.66-10,008.36

Finding the Fourth Proportional to 15,304.68, 21,129.66 and 10,008.36

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Solution

The fourth proportional to 15,304.68, 21,129.66 and 10,008.36 is: 13,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.68 : 21,129.66 = 10,008.36 : x
  2. Step 2: Convert to fraction form
    15,304.68/21,129.66 = 10,008.36/x
  3. Step 3: Cross multiply
    15,304.68x = 21,129.66 × 10,008.36
  4. Step 4: Simplify right side
    15,304.68x = 211,473,243.96
  5. Step 5: Solve for x
    x = 211,473,243.96/15,304.68
  6. Step 6: Final answer
    x = 13,817.55

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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.