Home / 21,204.60-31,806.90-18,944.70

Finding the Fourth Proportional to 21,204.60, 31,806.90 and 18,944.70

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Solution

The fourth proportional to 21,204.60, 31,806.90 and 18,944.70 is: 28,417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.60 : 31,806.90 = 18,944.70 : x
  2. Step 2: Convert to fraction form
    21,204.60/31,806.90 = 18,944.70/x
  3. Step 3: Cross multiply
    21,204.60x = 31,806.90 × 18,944.70
  4. Step 4: Simplify right side
    21,204.60x = 602,572,178.43
  5. Step 5: Solve for x
    x = 602,572,178.43/21,204.60
  6. Step 6: Final answer
    x = 28,417.05

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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.