Home / 23,115.40-31,903.14-13,689.16

Finding the Fourth Proportional to 23,115.40, 31,903.14 and 13,689.16

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Solution

The fourth proportional to 23,115.40, 31,903.14 and 13,689.16 is: 18,893.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.40 : 31,903.14 = 13,689.16 : x
  2. Step 2: Convert to fraction form
    23,115.40/31,903.14 = 13,689.16/x
  3. Step 3: Cross multiply
    23,115.40x = 31,903.14 × 13,689.16
  4. Step 4: Simplify right side
    23,115.40x = 436,727,187.96
  5. Step 5: Solve for x
    x = 436,727,187.96/23,115.40
  6. Step 6: Final answer
    x = 18,893.34

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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.