Home / 20,898.24-28,838.40-11,467.20

Finding the Fourth Proportional to 20,898.24, 28,838.40 and 11,467.20

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Solution

The fourth proportional to 20,898.24, 28,838.40 and 11,467.20 is: 15,824.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.24 : 28,838.40 = 11,467.20 : x
  2. Step 2: Convert to fraction form
    20,898.24/28,838.40 = 11,467.20/x
  3. Step 3: Cross multiply
    20,898.24x = 28,838.40 × 11,467.20
  4. Step 4: Simplify right side
    20,898.24x = 330,695,700.48
  5. Step 5: Solve for x
    x = 330,695,700.48/20,898.24
  6. Step 6: Final answer
    x = 15,824.09

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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.