Home / 10,345.40-14,276.84-5,629.72

Finding the Fourth Proportional to 10,345.40, 14,276.84 and 5,629.72

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Solution

The fourth proportional to 10,345.40, 14,276.84 and 5,629.72 is: 7,769.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.40 : 14,276.84 = 5,629.72 : x
  2. Step 2: Convert to fraction form
    10,345.40/14,276.84 = 5,629.72/x
  3. Step 3: Cross multiply
    10,345.40x = 14,276.84 × 5,629.72
  4. Step 4: Simplify right side
    10,345.40x = 80,374,611.68
  5. Step 5: Solve for x
    x = 80,374,611.68/10,345.40
  6. Step 6: Final answer
    x = 7,769.12

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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.