Home / 15,580.98-21,500.90-8,507.24

Finding the Fourth Proportional to 15,580.98, 21,500.90 and 8,507.24

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Solution

The fourth proportional to 15,580.98, 21,500.90 and 8,507.24 is: 11,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.98 : 21,500.90 = 8,507.24 : x
  2. Step 2: Convert to fraction form
    15,580.98/21,500.90 = 8,507.24/x
  3. Step 3: Cross multiply
    15,580.98x = 21,500.90 × 8,507.24
  4. Step 4: Simplify right side
    15,580.98x = 182,913,316.52
  5. Step 5: Solve for x
    x = 182,913,316.52/15,580.98
  6. Step 6: Final answer
    x = 11,739.53

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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.