Home / 21,269.77-31,887.21-8,798.74

Finding the Fourth Proportional to 21,269.77, 31,887.21 and 8,798.74

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Solution

The fourth proportional to 21,269.77, 31,887.21 and 8,798.74 is: 13,190.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.77 : 31,887.21 = 8,798.74 : x
  2. Step 2: Convert to fraction form
    21,269.77/31,887.21 = 8,798.74/x
  3. Step 3: Cross multiply
    21,269.77x = 31,887.21 × 8,798.74
  4. Step 4: Simplify right side
    21,269.77x = 280,567,190.40
  5. Step 5: Solve for x
    x = 280,567,190.40/21,269.77
  6. Step 6: Final answer
    x = 13,190.89

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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.