Home / 31,626.72-43,639.60-18,885.06

Finding the Fourth Proportional to 31,626.72, 43,639.60 and 18,885.06

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Solution

The fourth proportional to 31,626.72, 43,639.60 and 18,885.06 is: 26,058.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,626.72 : 43,639.60 = 18,885.06 : x
  2. Step 2: Convert to fraction form
    31,626.72/43,639.60 = 18,885.06/x
  3. Step 3: Cross multiply
    31,626.72x = 43,639.60 × 18,885.06
  4. Step 4: Simplify right side
    31,626.72x = 824,136,464.38
  5. Step 5: Solve for x
    x = 824,136,464.38/31,626.72
  6. Step 6: Final answer
    x = 26,058.23

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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.