Home / 15,653.86-21,602.30-8,580.33

Finding the Fourth Proportional to 15,653.86, 21,602.30 and 8,580.33

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Solution

The fourth proportional to 15,653.86, 21,602.30 and 8,580.33 is: 11,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.86 : 21,602.30 = 8,580.33 : x
  2. Step 2: Convert to fraction form
    15,653.86/21,602.30 = 8,580.33/x
  3. Step 3: Cross multiply
    15,653.86x = 21,602.30 × 8,580.33
  4. Step 4: Simplify right side
    15,653.86x = 185,354,819.86
  5. Step 5: Solve for x
    x = 185,354,819.86/15,653.86
  6. Step 6: Final answer
    x = 11,840.84

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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.