Home / 31,482-47,217.24-10,421.28

Finding the Fourth Proportional to 31,482, 47,217.24 and 10,421.28

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Solution

The fourth proportional to 31,482, 47,217.24 and 10,421.28 is: 15,630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,482 : 47,217.24 = 10,421.28 : x
  2. Step 2: Convert to fraction form
    31,482/47,217.24 = 10,421.28/x
  3. Step 3: Cross multiply
    31,482x = 47,217.24 × 10,421.28
  4. Step 4: Simplify right side
    31,482x = 492,064,078.87
  5. Step 5: Solve for x
    x = 492,064,078.87/31,482
  6. Step 6: Final answer
    x = 15,630.01

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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.