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Finding the Fourth Proportional to 18,164.80, 25,068.32 and 10,209.52

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Solution

The fourth proportional to 18,164.80, 25,068.32 and 10,209.52 is: 14,089.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.80 : 25,068.32 = 10,209.52 : x
  2. Step 2: Convert to fraction form
    18,164.80/25,068.32 = 10,209.52/x
  3. Step 3: Cross multiply
    18,164.80x = 25,068.32 × 10,209.52
  4. Step 4: Simplify right side
    18,164.80x = 255,935,514.41
  5. Step 5: Solve for x
    x = 255,935,514.41/18,164.80
  6. Step 6: Final answer
    x = 14,089.64

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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.