Home / 18,669.60-28,005.12-4,818.24

Finding the Fourth Proportional to 18,669.60, 28,005.12 and 4,818.24

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Solution

The fourth proportional to 18,669.60, 28,005.12 and 4,818.24 is: 7,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.60 : 28,005.12 = 4,818.24 : x
  2. Step 2: Convert to fraction form
    18,669.60/28,005.12 = 4,818.24/x
  3. Step 3: Cross multiply
    18,669.60x = 28,005.12 × 4,818.24
  4. Step 4: Simplify right side
    18,669.60x = 134,935,389.39
  5. Step 5: Solve for x
    x = 134,935,389.39/18,669.60
  6. Step 6: Final answer
    x = 7,227.55

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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.