Home / 13,429.64-18,532.68-7,764.32

Finding the Fourth Proportional to 13,429.64, 18,532.68 and 7,764.32

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Solution

The fourth proportional to 13,429.64, 18,532.68 and 7,764.32 is: 10,714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.64 : 18,532.68 = 7,764.32 : x
  2. Step 2: Convert to fraction form
    13,429.64/18,532.68 = 7,764.32/x
  3. Step 3: Cross multiply
    13,429.64x = 18,532.68 × 7,764.32
  4. Step 4: Simplify right side
    13,429.64x = 143,893,657.98
  5. Step 5: Solve for x
    x = 143,893,657.98/13,429.64
  6. Step 6: Final answer
    x = 10,714.63

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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.