Home / 10,920.14-16,380.30-5,987.08

Finding the Fourth Proportional to 10,920.14, 16,380.30 and 5,987.08

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Solution

The fourth proportional to 10,920.14, 16,380.30 and 5,987.08 is: 8,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.14 : 16,380.30 = 5,987.08 : x
  2. Step 2: Convert to fraction form
    10,920.14/16,380.30 = 5,987.08/x
  3. Step 3: Cross multiply
    10,920.14x = 16,380.30 × 5,987.08
  4. Step 4: Simplify right side
    10,920.14x = 98,070,166.52
  5. Step 5: Solve for x
    x = 98,070,166.52/10,920.14
  6. Step 6: Final answer
    x = 8,980.67

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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.