Home / 31,513.24-47,240.64-11,776.78

Finding the Fourth Proportional to 31,513.24, 47,240.64 and 11,776.78

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Solution

The fourth proportional to 31,513.24, 47,240.64 and 11,776.78 is: 17,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,513.24 : 47,240.64 = 11,776.78 : x
  2. Step 2: Convert to fraction form
    31,513.24/47,240.64 = 11,776.78/x
  3. Step 3: Cross multiply
    31,513.24x = 47,240.64 × 11,776.78
  4. Step 4: Simplify right side
    31,513.24x = 556,342,624.34
  5. Step 5: Solve for x
    x = 556,342,624.34/31,513.24
  6. Step 6: Final answer
    x = 17,654.25

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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.