Home / 21,211.88-31,752.21-18,062.60

Finding the Fourth Proportional to 21,211.88, 31,752.21 and 18,062.60

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Solution

The fourth proportional to 21,211.88, 31,752.21 and 18,062.60 is: 27,038.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.88 : 31,752.21 = 18,062.60 : x
  2. Step 2: Convert to fraction form
    21,211.88/31,752.21 = 18,062.60/x
  3. Step 3: Cross multiply
    21,211.88x = 31,752.21 × 18,062.60
  4. Step 4: Simplify right side
    21,211.88x = 573,527,547.73
  5. Step 5: Solve for x
    x = 573,527,547.73/21,211.88
  6. Step 6: Final answer
    x = 27,038.03

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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.