Home / 15,360.22-21,200.15-9,975.14

Finding the Fourth Proportional to 15,360.22, 21,200.15 and 9,975.14

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Solution

The fourth proportional to 15,360.22, 21,200.15 and 9,975.14 is: 13,767.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.22 : 21,200.15 = 9,975.14 : x
  2. Step 2: Convert to fraction form
    15,360.22/21,200.15 = 9,975.14/x
  3. Step 3: Cross multiply
    15,360.22x = 21,200.15 × 9,975.14
  4. Step 4: Simplify right side
    15,360.22x = 211,474,464.27
  5. Step 5: Solve for x
    x = 211,474,464.27/15,360.22
  6. Step 6: Final answer
    x = 13,767.67

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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.