Home / 15,580.85-21,501.60-8,507.12

Finding the Fourth Proportional to 15,580.85, 21,501.60 and 8,507.12

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Solution

The fourth proportional to 15,580.85, 21,501.60 and 8,507.12 is: 11,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.85 : 21,501.60 = 8,507.12 : x
  2. Step 2: Convert to fraction form
    15,580.85/21,501.60 = 8,507.12/x
  3. Step 3: Cross multiply
    15,580.85x = 21,501.60 × 8,507.12
  4. Step 4: Simplify right side
    15,580.85x = 182,916,691.39
  5. Step 5: Solve for x
    x = 182,916,691.39/15,580.85
  6. Step 6: Final answer
    x = 11,739.84

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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.