Home / 31,485.55-43,438.64-17,865.70

Finding the Fourth Proportional to 31,485.55, 43,438.64 and 17,865.70

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Solution

The fourth proportional to 31,485.55, 43,438.64 and 17,865.70 is: 24,648.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,485.55 : 43,438.64 = 17,865.70 : x
  2. Step 2: Convert to fraction form
    31,485.55/43,438.64 = 17,865.70/x
  3. Step 3: Cross multiply
    31,485.55x = 43,438.64 × 17,865.70
  4. Step 4: Simplify right side
    31,485.55x = 776,061,621.32
  5. Step 5: Solve for x
    x = 776,061,621.32/31,485.55
  6. Step 6: Final answer
    x = 24,648.19

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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.