Home / 20,416.28-28,175.46-11,465.24

Finding the Fourth Proportional to 20,416.28, 28,175.46 and 11,465.24

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Solution

The fourth proportional to 20,416.28, 28,175.46 and 11,465.24 is: 15,822.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.28 : 28,175.46 = 11,465.24 : x
  2. Step 2: Convert to fraction form
    20,416.28/28,175.46 = 11,465.24/x
  3. Step 3: Cross multiply
    20,416.28x = 28,175.46 × 11,465.24
  4. Step 4: Simplify right side
    20,416.28x = 323,038,411.01
  5. Step 5: Solve for x
    x = 323,038,411.01/20,416.28
  6. Step 6: Final answer
    x = 15,822.59

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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.