Home / 11,465.48-15,821.46-6,428.57

Finding the Fourth Proportional to 11,465.48, 15,821.46 and 6,428.57

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Solution

The fourth proportional to 11,465.48, 15,821.46 and 6,428.57 is: 8,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,465.48 : 15,821.46 = 6,428.57 : x
  2. Step 2: Convert to fraction form
    11,465.48/15,821.46 = 6,428.57/x
  3. Step 3: Cross multiply
    11,465.48x = 15,821.46 × 6,428.57
  4. Step 4: Simplify right side
    11,465.48x = 101,709,284.00
  5. Step 5: Solve for x
    x = 101,709,284.00/11,465.48
  6. Step 6: Final answer
    x = 8,870.91

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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.