Home / 14,585.64-20,128.58-8,920.28

Finding the Fourth Proportional to 14,585.64, 20,128.58 and 8,920.28

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Solution

The fourth proportional to 14,585.64, 20,128.58 and 8,920.28 is: 12,310.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,585.64 : 20,128.58 = 8,920.28 : x
  2. Step 2: Convert to fraction form
    14,585.64/20,128.58 = 8,920.28/x
  3. Step 3: Cross multiply
    14,585.64x = 20,128.58 × 8,920.28
  4. Step 4: Simplify right side
    14,585.64x = 179,552,654.29
  5. Step 5: Solve for x
    x = 179,552,654.29/14,585.64
  6. Step 6: Final answer
    x = 12,310.24

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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.