Home / 21,240.36-31,861.98-5,657.48

Finding the Fourth Proportional to 21,240.36, 31,861.98 and 5,657.48

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Solution

The fourth proportional to 21,240.36, 31,861.98 and 5,657.48 is: 8,486.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.36 : 31,861.98 = 5,657.48 : x
  2. Step 2: Convert to fraction form
    21,240.36/31,861.98 = 5,657.48/x
  3. Step 3: Cross multiply
    21,240.36x = 31,861.98 × 5,657.48
  4. Step 4: Simplify right side
    21,240.36x = 180,258,514.61
  5. Step 5: Solve for x
    x = 180,258,514.61/21,240.36
  6. Step 6: Final answer
    x = 8,486.60

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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.