Home / 15,726.34-21,690.06-9,754.66

Finding the Fourth Proportional to 15,726.34, 21,690.06 and 9,754.66

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Solution

The fourth proportional to 15,726.34, 21,690.06 and 9,754.66 is: 13,453.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.34 : 21,690.06 = 9,754.66 : x
  2. Step 2: Convert to fraction form
    15,726.34/21,690.06 = 9,754.66/x
  3. Step 3: Cross multiply
    15,726.34x = 21,690.06 × 9,754.66
  4. Step 4: Simplify right side
    15,726.34x = 211,579,160.68
  5. Step 5: Solve for x
    x = 211,579,160.68/15,726.34
  6. Step 6: Final answer
    x = 13,453.81

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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.