Home / 21,393.72-29,485.62-18,045.18

Finding the Fourth Proportional to 21,393.72, 29,485.62 and 18,045.18

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Solution

The fourth proportional to 21,393.72, 29,485.62 and 18,045.18 is: 24,870.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.72 : 29,485.62 = 18,045.18 : x
  2. Step 2: Convert to fraction form
    21,393.72/29,485.62 = 18,045.18/x
  3. Step 3: Cross multiply
    21,393.72x = 29,485.62 × 18,045.18
  4. Step 4: Simplify right side
    21,393.72x = 532,073,320.31
  5. Step 5: Solve for x
    x = 532,073,320.31/21,393.72
  6. Step 6: Final answer
    x = 24,870.54

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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.