Home / 15,225.48-21,002.40-8,936.64

Finding the Fourth Proportional to 15,225.48, 21,002.40 and 8,936.64

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Solution

The fourth proportional to 15,225.48, 21,002.40 and 8,936.64 is: 12,327.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.48 : 21,002.40 = 8,936.64 : x
  2. Step 2: Convert to fraction form
    15,225.48/21,002.40 = 8,936.64/x
  3. Step 3: Cross multiply
    15,225.48x = 21,002.40 × 8,936.64
  4. Step 4: Simplify right side
    15,225.48x = 187,690,887.94
  5. Step 5: Solve for x
    x = 187,690,887.94/15,225.48
  6. Step 6: Final answer
    x = 12,327.42

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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.