Home / 10,405.16-14,359.40-5,689.36

Finding the Fourth Proportional to 10,405.16, 14,359.40 and 5,689.36

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Solution

The fourth proportional to 10,405.16, 14,359.40 and 5,689.36 is: 7,851.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.16 : 14,359.40 = 5,689.36 : x
  2. Step 2: Convert to fraction form
    10,405.16/14,359.40 = 5,689.36/x
  3. Step 3: Cross multiply
    10,405.16x = 14,359.40 × 5,689.36
  4. Step 4: Simplify right side
    10,405.16x = 81,695,795.98
  5. Step 5: Solve for x
    x = 81,695,795.98/10,405.16
  6. Step 6: Final answer
    x = 7,851.47

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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.