Home / 28,453.34-42,678.19-8,730.25

Finding the Fourth Proportional to 28,453.34, 42,678.19 and 8,730.25

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Solution

The fourth proportional to 28,453.34, 42,678.19 and 8,730.25 is: 13,094.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.34 : 42,678.19 = 8,730.25 : x
  2. Step 2: Convert to fraction form
    28,453.34/42,678.19 = 8,730.25/x
  3. Step 3: Cross multiply
    28,453.34x = 42,678.19 × 8,730.25
  4. Step 4: Simplify right side
    28,453.34x = 372,591,172.46
  5. Step 5: Solve for x
    x = 372,591,172.46/28,453.34
  6. Step 6: Final answer
    x = 13,094.81

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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.