Home / 10,431.39-14,395.65-5,715.96

Finding the Fourth Proportional to 10,431.39, 14,395.65 and 5,715.96

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Solution

The fourth proportional to 10,431.39, 14,395.65 and 5,715.96 is: 7,888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.39 : 14,395.65 = 5,715.96 : x
  2. Step 2: Convert to fraction form
    10,431.39/14,395.65 = 5,715.96/x
  3. Step 3: Cross multiply
    10,431.39x = 14,395.65 × 5,715.96
  4. Step 4: Simplify right side
    10,431.39x = 82,284,959.57
  5. Step 5: Solve for x
    x = 82,284,959.57/10,431.39
  6. Step 6: Final answer
    x = 7,888.21

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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.