Home / 15,396.14-21,246.24-8,681.72

Finding the Fourth Proportional to 15,396.14, 21,246.24 and 8,681.72

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Solution

The fourth proportional to 15,396.14, 21,246.24 and 8,681.72 is: 11,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.14 : 21,246.24 = 8,681.72 : x
  2. Step 2: Convert to fraction form
    15,396.14/21,246.24 = 8,681.72/x
  3. Step 3: Cross multiply
    15,396.14x = 21,246.24 × 8,681.72
  4. Step 4: Simplify right side
    15,396.14x = 184,453,800.50
  5. Step 5: Solve for x
    x = 184,453,800.50/15,396.14
  6. Step 6: Final answer
    x = 11,980.53

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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.