Home / 10,405.45-14,359.54-5,689.74

Finding the Fourth Proportional to 10,405.45, 14,359.54 and 5,689.74

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Solution

The fourth proportional to 10,405.45, 14,359.54 and 5,689.74 is: 7,851.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.45 : 14,359.54 = 5,689.74 : x
  2. Step 2: Convert to fraction form
    10,405.45/14,359.54 = 5,689.74/x
  3. Step 3: Cross multiply
    10,405.45x = 14,359.54 × 5,689.74
  4. Step 4: Simplify right side
    10,405.45x = 81,702,049.12
  5. Step 5: Solve for x
    x = 81,702,049.12/10,405.45
  6. Step 6: Final answer
    x = 7,851.86

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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.