Home / 15,580.92-21,501.36-8,507.28

Finding the Fourth Proportional to 15,580.92, 21,501.36 and 8,507.28

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Solution

The fourth proportional to 15,580.92, 21,501.36 and 8,507.28 is: 11,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.92 : 21,501.36 = 8,507.28 : x
  2. Step 2: Convert to fraction form
    15,580.92/21,501.36 = 8,507.28/x
  3. Step 3: Cross multiply
    15,580.92x = 21,501.36 × 8,507.28
  4. Step 4: Simplify right side
    15,580.92x = 182,918,089.90
  5. Step 5: Solve for x
    x = 182,918,089.90/15,580.92
  6. Step 6: Final answer
    x = 11,739.88

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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.