Home / 31,312.81-43,211.35-17,165.58

Finding the Fourth Proportional to 31,312.81, 43,211.35 and 17,165.58

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Solution

The fourth proportional to 31,312.81, 43,211.35 and 17,165.58 is: 23,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,312.81 : 43,211.35 = 17,165.58 : x
  2. Step 2: Convert to fraction form
    31,312.81/43,211.35 = 17,165.58/x
  3. Step 3: Cross multiply
    31,312.81x = 43,211.35 × 17,165.58
  4. Step 4: Simplify right side
    31,312.81x = 741,747,885.33
  5. Step 5: Solve for x
    x = 741,747,885.33/31,312.81
  6. Step 6: Final answer
    x = 23,688.32

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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.