Home / 10,380.48-14,325.06-5,664.78

Finding the Fourth Proportional to 10,380.48, 14,325.06 and 5,664.78

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Solution

The fourth proportional to 10,380.48, 14,325.06 and 5,664.78 is: 7,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.48 : 14,325.06 = 5,664.78 : x
  2. Step 2: Convert to fraction form
    10,380.48/14,325.06 = 5,664.78/x
  3. Step 3: Cross multiply
    10,380.48x = 14,325.06 × 5,664.78
  4. Step 4: Simplify right side
    10,380.48x = 81,148,313.39
  5. Step 5: Solve for x
    x = 81,148,313.39/10,380.48
  6. Step 6: Final answer
    x = 7,817.40

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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.