Home / 15,693.32-21,657.23-8,620.20

Finding the Fourth Proportional to 15,693.32, 21,657.23 and 8,620.20

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Solution

The fourth proportional to 15,693.32, 21,657.23 and 8,620.20 is: 11,896.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.32 : 21,657.23 = 8,620.20 : x
  2. Step 2: Convert to fraction form
    15,693.32/21,657.23 = 8,620.20/x
  3. Step 3: Cross multiply
    15,693.32x = 21,657.23 × 8,620.20
  4. Step 4: Simplify right side
    15,693.32x = 186,689,610.95
  5. Step 5: Solve for x
    x = 186,689,610.95/15,693.32
  6. Step 6: Final answer
    x = 11,896.12

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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.