Home / 31,271.81-43,155.12-16,931.77

Finding the Fourth Proportional to 31,271.81, 43,155.12 and 16,931.77

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Solution

The fourth proportional to 31,271.81, 43,155.12 and 16,931.77 is: 23,365.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,271.81 : 43,155.12 = 16,931.77 : x
  2. Step 2: Convert to fraction form
    31,271.81/43,155.12 = 16,931.77/x
  3. Step 3: Cross multiply
    31,271.81x = 43,155.12 × 16,931.77
  4. Step 4: Simplify right side
    31,271.81x = 730,692,458.27
  5. Step 5: Solve for x
    x = 730,692,458.27/31,271.81
  6. Step 6: Final answer
    x = 23,365.85

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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.