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Finding the Fourth Proportional to 23,003.78, 34,501.79 and 7,421.40

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Solution

The fourth proportional to 23,003.78, 34,501.79 and 7,421.40 is: 11,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,003.78 : 34,501.79 = 7,421.40 : x
  2. Step 2: Convert to fraction form
    23,003.78/34,501.79 = 7,421.40/x
  3. Step 3: Cross multiply
    23,003.78x = 34,501.79 × 7,421.40
  4. Step 4: Simplify right side
    23,003.78x = 256,051,584.31
  5. Step 5: Solve for x
    x = 256,051,584.31/23,003.78
  6. Step 6: Final answer
    x = 11,130.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.