Home / 15,478.72-21,351.36-14,441.92

Finding the Fourth Proportional to 15,478.72, 21,351.36 and 14,441.92

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Solution

The fourth proportional to 15,478.72, 21,351.36 and 14,441.92 is: 19,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.72 : 21,351.36 = 14,441.92 : x
  2. Step 2: Convert to fraction form
    15,478.72/21,351.36 = 14,441.92/x
  3. Step 3: Cross multiply
    15,478.72x = 21,351.36 × 14,441.92
  4. Step 4: Simplify right side
    15,478.72x = 308,354,633.01
  5. Step 5: Solve for x
    x = 308,354,633.01/15,478.72
  6. Step 6: Final answer
    x = 19,921.20

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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.