Home / 10,431.16-14,394.87-5,715.43

Finding the Fourth Proportional to 10,431.16, 14,394.87 and 5,715.43

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Solution

The fourth proportional to 10,431.16, 14,394.87 and 5,715.43 is: 7,887.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.16 : 14,394.87 = 5,715.43 : x
  2. Step 2: Convert to fraction form
    10,431.16/14,394.87 = 5,715.43/x
  3. Step 3: Cross multiply
    10,431.16x = 14,394.87 × 5,715.43
  4. Step 4: Simplify right side
    10,431.16x = 82,272,871.84
  5. Step 5: Solve for x
    x = 82,272,871.84/10,431.16
  6. Step 6: Final answer
    x = 7,887.22

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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.