Home / 28,211-38,932.12-15,464.20

Finding the Fourth Proportional to 28,211, 38,932.12 and 15,464.20

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Solution

The fourth proportional to 28,211, 38,932.12 and 15,464.20 is: 21,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211 : 38,932.12 = 15,464.20 : x
  2. Step 2: Convert to fraction form
    28,211/38,932.12 = 15,464.20/x
  3. Step 3: Cross multiply
    28,211x = 38,932.12 × 15,464.20
  4. Step 4: Simplify right side
    28,211x = 602,054,090.10
  5. Step 5: Solve for x
    x = 602,054,090.10/28,211
  6. Step 6: Final answer
    x = 21,341.11

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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.