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Finding the Fourth Proportional to 20,332.80, 30,547.80 and 18,194.40

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Solution

The fourth proportional to 20,332.80, 30,547.80 and 18,194.40 is: 27,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.80 : 30,547.80 = 18,194.40 : x
  2. Step 2: Convert to fraction form
    20,332.80/30,547.80 = 18,194.40/x
  3. Step 3: Cross multiply
    20,332.80x = 30,547.80 × 18,194.40
  4. Step 4: Simplify right side
    20,332.80x = 555,798,892.32
  5. Step 5: Solve for x
    x = 555,798,892.32/20,332.80
  6. Step 6: Final answer
    x = 27,335.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.