Home / 38,772.64-58,153.44-12,479.68

Finding the Fourth Proportional to 38,772.64, 58,153.44 and 12,479.68

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Solution

The fourth proportional to 38,772.64, 58,153.44 and 12,479.68 is: 18,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,772.64 : 58,153.44 = 12,479.68 : x
  2. Step 2: Convert to fraction form
    38,772.64/58,153.44 = 12,479.68/x
  3. Step 3: Cross multiply
    38,772.64x = 58,153.44 × 12,479.68
  4. Step 4: Simplify right side
    38,772.64x = 725,736,322.10
  5. Step 5: Solve for x
    x = 725,736,322.10/38,772.64
  6. Step 6: Final answer
    x = 18,717.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.