Home / 20,316.54-28,054.13-12,775.49

Finding the Fourth Proportional to 20,316.54, 28,054.13 and 12,775.49

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Solution

The fourth proportional to 20,316.54, 28,054.13 and 12,775.49 is: 17,641.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.54 : 28,054.13 = 12,775.49 : x
  2. Step 2: Convert to fraction form
    20,316.54/28,054.13 = 12,775.49/x
  3. Step 3: Cross multiply
    20,316.54x = 28,054.13 × 12,775.49
  4. Step 4: Simplify right side
    20,316.54x = 358,405,257.27
  5. Step 5: Solve for x
    x = 358,405,257.27/20,316.54
  6. Step 6: Final answer
    x = 17,641.06

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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.