Home / 20,292.63-28,011.65-18,164.40

Finding the Fourth Proportional to 20,292.63, 28,011.65 and 18,164.40

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Solution

The fourth proportional to 20,292.63, 28,011.65 and 18,164.40 is: 25,073.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.63 : 28,011.65 = 18,164.40 : x
  2. Step 2: Convert to fraction form
    20,292.63/28,011.65 = 18,164.40/x
  3. Step 3: Cross multiply
    20,292.63x = 28,011.65 × 18,164.40
  4. Step 4: Simplify right side
    20,292.63x = 508,814,942.99
  5. Step 5: Solve for x
    x = 508,814,942.99/20,292.63
  6. Step 6: Final answer
    x = 25,073.88

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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.