Home / 15,221.04-21,004.56-8,933.28

Finding the Fourth Proportional to 15,221.04, 21,004.56 and 8,933.28

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Solution

The fourth proportional to 15,221.04, 21,004.56 and 8,933.28 is: 12,327.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.04 : 21,004.56 = 8,933.28 : x
  2. Step 2: Convert to fraction form
    15,221.04/21,004.56 = 8,933.28/x
  3. Step 3: Cross multiply
    15,221.04x = 21,004.56 × 8,933.28
  4. Step 4: Simplify right side
    15,221.04x = 187,639,615.76
  5. Step 5: Solve for x
    x = 187,639,615.76/15,221.04
  6. Step 6: Final answer
    x = 12,327.65

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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.