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Finding the Fourth Proportional to 12,624.72, 17,421.48 and 7,034.64

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Solution

The fourth proportional to 12,624.72, 17,421.48 and 7,034.64 is: 9,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.72 : 17,421.48 = 7,034.64 : x
  2. Step 2: Convert to fraction form
    12,624.72/17,421.48 = 7,034.64/x
  3. Step 3: Cross multiply
    12,624.72x = 17,421.48 × 7,034.64
  4. Step 4: Simplify right side
    12,624.72x = 122,553,840.07
  5. Step 5: Solve for x
    x = 122,553,840.07/12,624.72
  6. Step 6: Final answer
    x = 9,707.45

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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.