Home / 15,776.00-21,726.59-15,431.55

Finding the Fourth Proportional to 15,776.00, 21,726.59 and 15,431.55

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Solution

The fourth proportional to 15,776.00, 21,726.59 and 15,431.55 is: 21,252.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.00 : 21,726.59 = 15,431.55 : x
  2. Step 2: Convert to fraction form
    15,776.00/21,726.59 = 15,431.55/x
  3. Step 3: Cross multiply
    15,776.00x = 21,726.59 × 15,431.55
  4. Step 4: Simplify right side
    15,776.00x = 335,274,882.76
  5. Step 5: Solve for x
    x = 335,274,882.76/15,776.00
  6. Step 6: Final answer
    x = 21,252.21

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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.