Home / 28,424.39-42,673.50-21,855.18

Finding the Fourth Proportional to 28,424.39, 42,673.50 and 21,855.18

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Solution

The fourth proportional to 28,424.39, 42,673.50 and 21,855.18 is: 32,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.39 : 42,673.50 = 21,855.18 : x
  2. Step 2: Convert to fraction form
    28,424.39/42,673.50 = 21,855.18/x
  3. Step 3: Cross multiply
    28,424.39x = 42,673.50 × 21,855.18
  4. Step 4: Simplify right side
    28,424.39x = 932,637,183.76
  5. Step 5: Solve for x
    x = 932,637,183.76/28,424.39
  6. Step 6: Final answer
    x = 32,811.16

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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.