Home / 15,355.58-21,188.96-8,641.06

Finding the Fourth Proportional to 15,355.58, 21,188.96 and 8,641.06

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Solution

The fourth proportional to 15,355.58, 21,188.96 and 8,641.06 is: 11,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.58 : 21,188.96 = 8,641.06 : x
  2. Step 2: Convert to fraction form
    15,355.58/21,188.96 = 8,641.06/x
  3. Step 3: Cross multiply
    15,355.58x = 21,188.96 × 8,641.06
  4. Step 4: Simplify right side
    15,355.58x = 183,094,978.52
  5. Step 5: Solve for x
    x = 183,094,978.52/15,355.58
  6. Step 6: Final answer
    x = 11,923.68

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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.