Home / 15,726.96-21,699.90-9,012.06

Finding the Fourth Proportional to 15,726.96, 21,699.90 and 9,012.06

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Solution

The fourth proportional to 15,726.96, 21,699.90 and 9,012.06 is: 12,434.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.96 : 21,699.90 = 9,012.06 : x
  2. Step 2: Convert to fraction form
    15,726.96/21,699.90 = 9,012.06/x
  3. Step 3: Cross multiply
    15,726.96x = 21,699.90 × 9,012.06
  4. Step 4: Simplify right side
    15,726.96x = 195,560,800.79
  5. Step 5: Solve for x
    x = 195,560,800.79/15,726.96
  6. Step 6: Final answer
    x = 12,434.75

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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.