Home / 21,245.51-31,868.25-10,118.46

Finding the Fourth Proportional to 21,245.51, 31,868.25 and 10,118.46

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Solution

The fourth proportional to 21,245.51, 31,868.25 and 10,118.46 is: 15,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.51 : 31,868.25 = 10,118.46 : x
  2. Step 2: Convert to fraction form
    21,245.51/31,868.25 = 10,118.46/x
  3. Step 3: Cross multiply
    21,245.51x = 31,868.25 × 10,118.46
  4. Step 4: Simplify right side
    21,245.51x = 322,457,612.90
  5. Step 5: Solve for x
    x = 322,457,612.90/21,245.51
  6. Step 6: Final answer
    x = 15,177.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.