Home / 15,345.63-21,165.63-9,372.38

Finding the Fourth Proportional to 15,345.63, 21,165.63 and 9,372.38

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Solution

The fourth proportional to 15,345.63, 21,165.63 and 9,372.38 is: 12,926.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345.63 : 21,165.63 = 9,372.38 : x
  2. Step 2: Convert to fraction form
    15,345.63/21,165.63 = 9,372.38/x
  3. Step 3: Cross multiply
    15,345.63x = 21,165.63 × 9,372.38
  4. Step 4: Simplify right side
    15,345.63x = 198,372,327.30
  5. Step 5: Solve for x
    x = 198,372,327.30/15,345.63
  6. Step 6: Final answer
    x = 12,926.96

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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.