Home / 15,580.82-21,501.65-8,507.43

Finding the Fourth Proportional to 15,580.82, 21,501.65 and 8,507.43

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Solution

The fourth proportional to 15,580.82, 21,501.65 and 8,507.43 is: 11,740.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.82 : 21,501.65 = 8,507.43 : x
  2. Step 2: Convert to fraction form
    15,580.82/21,501.65 = 8,507.43/x
  3. Step 3: Cross multiply
    15,580.82x = 21,501.65 × 8,507.43
  4. Step 4: Simplify right side
    15,580.82x = 182,923,803.53
  5. Step 5: Solve for x
    x = 182,923,803.53/15,580.82
  6. Step 6: Final answer
    x = 11,740.32

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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.