Home / 10,345.18-14,276.67-5,629.78

Finding the Fourth Proportional to 10,345.18, 14,276.67 and 5,629.78

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Solution

The fourth proportional to 10,345.18, 14,276.67 and 5,629.78 is: 7,769.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.18 : 14,276.67 = 5,629.78 : x
  2. Step 2: Convert to fraction form
    10,345.18/14,276.67 = 5,629.78/x
  3. Step 3: Cross multiply
    10,345.18x = 14,276.67 × 5,629.78
  4. Step 4: Simplify right side
    10,345.18x = 80,374,511.23
  5. Step 5: Solve for x
    x = 80,374,511.23/10,345.18
  6. Step 6: Final answer
    x = 7,769.27

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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.