Home / 31,438.08-47,127.60-10,647.36

Finding the Fourth Proportional to 31,438.08, 47,127.60 and 10,647.36

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Solution

The fourth proportional to 31,438.08, 47,127.60 and 10,647.36 is: 15,961.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.08 : 47,127.60 = 10,647.36 : x
  2. Step 2: Convert to fraction form
    31,438.08/47,127.60 = 10,647.36/x
  3. Step 3: Cross multiply
    31,438.08x = 47,127.60 × 10,647.36
  4. Step 4: Simplify right side
    31,438.08x = 501,784,523.14
  5. Step 5: Solve for x
    x = 501,784,523.14/31,438.08
  6. Step 6: Final answer
    x = 15,961.04

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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.