Home / 19,331.10-28,999.35-8,237.70

Finding the Fourth Proportional to 19,331.10, 28,999.35 and 8,237.70

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Solution

The fourth proportional to 19,331.10, 28,999.35 and 8,237.70 is: 12,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.10 : 28,999.35 = 8,237.70 : x
  2. Step 2: Convert to fraction form
    19,331.10/28,999.35 = 8,237.70/x
  3. Step 3: Cross multiply
    19,331.10x = 28,999.35 × 8,237.70
  4. Step 4: Simplify right side
    19,331.10x = 238,887,945.50
  5. Step 5: Solve for x
    x = 238,887,945.50/19,331.10
  6. Step 6: Final answer
    x = 12,357.70

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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.