Home / 31,271.72-43,155.04-16,931.70

Finding the Fourth Proportional to 31,271.72, 43,155.04 and 16,931.70

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Solution

The fourth proportional to 31,271.72, 43,155.04 and 16,931.70 is: 23,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,271.72 : 43,155.04 = 16,931.70 : x
  2. Step 2: Convert to fraction form
    31,271.72/43,155.04 = 16,931.70/x
  3. Step 3: Cross multiply
    31,271.72x = 43,155.04 × 16,931.70
  4. Step 4: Simplify right side
    31,271.72x = 730,688,190.77
  5. Step 5: Solve for x
    x = 730,688,190.77/31,271.72
  6. Step 6: Final answer
    x = 23,365.78

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1.5x scale

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.