Home / 18,688.35-28,031.91-7,591.76

Finding the Fourth Proportional to 18,688.35, 28,031.91 and 7,591.76

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Solution

The fourth proportional to 18,688.35, 28,031.91 and 7,591.76 is: 11,387.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.35 : 28,031.91 = 7,591.76 : x
  2. Step 2: Convert to fraction form
    18,688.35/28,031.91 = 7,591.76/x
  3. Step 3: Cross multiply
    18,688.35x = 28,031.91 × 7,591.76
  4. Step 4: Simplify right side
    18,688.35x = 212,811,533.06
  5. Step 5: Solve for x
    x = 212,811,533.06/18,688.35
  6. Step 6: Final answer
    x = 11,387.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.