Home / 12,787.74-17,651.88-9,457.36

Finding the Fourth Proportional to 12,787.74, 17,651.88 and 9,457.36

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Solution

The fourth proportional to 12,787.74, 17,651.88 and 9,457.36 is: 13,054.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.74 : 17,651.88 = 9,457.36 : x
  2. Step 2: Convert to fraction form
    12,787.74/17,651.88 = 9,457.36/x
  3. Step 3: Cross multiply
    12,787.74x = 17,651.88 × 9,457.36
  4. Step 4: Simplify right side
    12,787.74x = 166,940,139.71
  5. Step 5: Solve for x
    x = 166,940,139.71/12,787.74
  6. Step 6: Final answer
    x = 13,054.70

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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.