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Finding the Fourth Proportional to 13,442.00, 18,548.95 and 7,472.86

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Solution

The fourth proportional to 13,442.00, 18,548.95 and 7,472.86 is: 10,311.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.00 : 18,548.95 = 7,472.86 : x
  2. Step 2: Convert to fraction form
    13,442.00/18,548.95 = 7,472.86/x
  3. Step 3: Cross multiply
    13,442.00x = 18,548.95 × 7,472.86
  4. Step 4: Simplify right side
    13,442.00x = 138,613,655.45
  5. Step 5: Solve for x
    x = 138,613,655.45/13,442.00
  6. Step 6: Final answer
    x = 10,311.98

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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.