Home / 9,126.29-13,678.50-5,420.54

Finding the Fourth Proportional to 9,126.29, 13,678.50 and 5,420.54

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Solution

The fourth proportional to 9,126.29, 13,678.50 and 5,420.54 is: 8,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,126.29 : 13,678.50 = 5,420.54 : x
  2. Step 2: Convert to fraction form
    9,126.29/13,678.50 = 5,420.54/x
  3. Step 3: Cross multiply
    9,126.29x = 13,678.50 × 5,420.54
  4. Step 4: Simplify right side
    9,126.29x = 74,144,856.39
  5. Step 5: Solve for x
    x = 74,144,856.39/9,126.29
  6. Step 6: Final answer
    x = 8,124.32

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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.