Home / 28,054.74-38,715.67-15,479.49

Finding the Fourth Proportional to 28,054.74, 38,715.67 and 15,479.49

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Solution

The fourth proportional to 28,054.74, 38,715.67 and 15,479.49 is: 21,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.74 : 38,715.67 = 15,479.49 : x
  2. Step 2: Convert to fraction form
    28,054.74/38,715.67 = 15,479.49/x
  3. Step 3: Cross multiply
    28,054.74x = 38,715.67 × 15,479.49
  4. Step 4: Simplify right side
    28,054.74x = 599,298,633.03
  5. Step 5: Solve for x
    x = 599,298,633.03/28,054.74
  6. Step 6: Final answer
    x = 21,361.76

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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.