Home / 28,745.32-43,117.99-12,931.88

Finding the Fourth Proportional to 28,745.32, 43,117.99 and 12,931.88

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Solution

The fourth proportional to 28,745.32, 43,117.99 and 12,931.88 is: 19,397.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.32 : 43,117.99 = 12,931.88 : x
  2. Step 2: Convert to fraction form
    28,745.32/43,117.99 = 12,931.88/x
  3. Step 3: Cross multiply
    28,745.32x = 43,117.99 × 12,931.88
  4. Step 4: Simplify right side
    28,745.32x = 557,596,392.27
  5. Step 5: Solve for x
    x = 557,596,392.27/28,745.32
  6. Step 6: Final answer
    x = 19,397.82

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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.