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Finding the Fourth Proportional to 9,005.70, 13,490.64 and 7,048.74

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Solution

The fourth proportional to 9,005.70, 13,490.64 and 7,048.74 is: 10,559.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.70 : 13,490.64 = 7,048.74 : x
  2. Step 2: Convert to fraction form
    9,005.70/13,490.64 = 7,048.74/x
  3. Step 3: Cross multiply
    9,005.70x = 13,490.64 × 7,048.74
  4. Step 4: Simplify right side
    9,005.70x = 95,092,013.79
  5. Step 5: Solve for x
    x = 95,092,013.79/9,005.70
  6. Step 6: Final answer
    x = 10,559.09

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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.