Home / 15,031.35-20,741.37-8,316.05

Finding the Fourth Proportional to 15,031.35, 20,741.37 and 8,316.05

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Solution

The fourth proportional to 15,031.35, 20,741.37 and 8,316.05 is: 11,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.35 : 20,741.37 = 8,316.05 : x
  2. Step 2: Convert to fraction form
    15,031.35/20,741.37 = 8,316.05/x
  3. Step 3: Cross multiply
    15,031.35x = 20,741.37 × 8,316.05
  4. Step 4: Simplify right side
    15,031.35x = 172,486,166.28
  5. Step 5: Solve for x
    x = 172,486,166.28/15,031.35
  6. Step 6: Final answer
    x = 11,475.09

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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.