Home / 15,385.14-21,230.88-8,672.16

Finding the Fourth Proportional to 15,385.14, 21,230.88 and 8,672.16

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Solution

The fourth proportional to 15,385.14, 21,230.88 and 8,672.16 is: 11,967.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.14 : 21,230.88 = 8,672.16 : x
  2. Step 2: Convert to fraction form
    15,385.14/21,230.88 = 8,672.16/x
  3. Step 3: Cross multiply
    15,385.14x = 21,230.88 × 8,672.16
  4. Step 4: Simplify right side
    15,385.14x = 184,117,588.30
  5. Step 5: Solve for x
    x = 184,117,588.30/15,385.14
  6. Step 6: Final answer
    x = 11,967.24

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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.