Home / 13,442.72-18,551.57-7,475.00

Finding the Fourth Proportional to 13,442.72, 18,551.57 and 7,475.00

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Solution

The fourth proportional to 13,442.72, 18,551.57 and 7,475.00 is: 10,315.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.72 : 18,551.57 = 7,475.00 : x
  2. Step 2: Convert to fraction form
    13,442.72/18,551.57 = 7,475.00/x
  3. Step 3: Cross multiply
    13,442.72x = 18,551.57 × 7,475.00
  4. Step 4: Simplify right side
    13,442.72x = 138,672,855.62
  5. Step 5: Solve for x
    x = 138,672,855.62/13,442.72
  6. Step 6: Final answer
    x = 10,315.84

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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.