Home / 31,271.45-43,154.62-16,931.28

Finding the Fourth Proportional to 31,271.45, 43,154.62 and 16,931.28

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Solution

The fourth proportional to 31,271.45, 43,154.62 and 16,931.28 is: 23,365.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,271.45 : 43,154.62 = 16,931.28 : x
  2. Step 2: Convert to fraction form
    31,271.45/43,154.62 = 16,931.28/x
  3. Step 3: Cross multiply
    31,271.45x = 43,154.62 × 16,931.28
  4. Step 4: Simplify right side
    31,271.45x = 730,663,074.02
  5. Step 5: Solve for x
    x = 730,663,074.02/31,271.45
  6. Step 6: Final answer
    x = 23,365.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.