Home / 31,467.79-47,201.81-12,748.18

Finding the Fourth Proportional to 31,467.79, 47,201.81 and 12,748.18

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Solution

The fourth proportional to 31,467.79, 47,201.81 and 12,748.18 is: 19,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,467.79 : 47,201.81 = 12,748.18 : x
  2. Step 2: Convert to fraction form
    31,467.79/47,201.81 = 12,748.18/x
  3. Step 3: Cross multiply
    31,467.79x = 47,201.81 × 12,748.18
  4. Step 4: Simplify right side
    31,467.79x = 601,737,320.08
  5. Step 5: Solve for x
    x = 601,737,320.08/31,467.79
  6. Step 6: Final answer
    x = 19,122.32

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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.