Home / 21,362.67-29,475.50-18,388.35

Finding the Fourth Proportional to 21,362.67, 29,475.50 and 18,388.35

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Solution

The fourth proportional to 21,362.67, 29,475.50 and 18,388.35 is: 25,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.67 : 29,475.50 = 18,388.35 : x
  2. Step 2: Convert to fraction form
    21,362.67/29,475.50 = 18,388.35/x
  3. Step 3: Cross multiply
    21,362.67x = 29,475.50 × 18,388.35
  4. Step 4: Simplify right side
    21,362.67x = 542,005,718.48
  5. Step 5: Solve for x
    x = 542,005,718.48/21,362.67
  6. Step 6: Final answer
    x = 25,371.63

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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.