Home / 15,740.28-21,723.12-11,754.48

Finding the Fourth Proportional to 15,740.28, 21,723.12 and 11,754.48

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Solution

The fourth proportional to 15,740.28, 21,723.12 and 11,754.48 is: 16,222.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.28 : 21,723.12 = 11,754.48 : x
  2. Step 2: Convert to fraction form
    15,740.28/21,723.12 = 11,754.48/x
  3. Step 3: Cross multiply
    15,740.28x = 21,723.12 × 11,754.48
  4. Step 4: Simplify right side
    15,740.28x = 255,343,950.25
  5. Step 5: Solve for x
    x = 255,343,950.25/15,740.28
  6. Step 6: Final answer
    x = 16,222.32

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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.