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Finding the Fourth Proportional to 15,647.70, 23,455.14 and 7,320.68

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Solution

The fourth proportional to 15,647.70, 23,455.14 and 7,320.68 is: 10,973.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.70 : 23,455.14 = 7,320.68 : x
  2. Step 2: Convert to fraction form
    15,647.70/23,455.14 = 7,320.68/x
  3. Step 3: Cross multiply
    15,647.70x = 23,455.14 × 7,320.68
  4. Step 4: Simplify right side
    15,647.70x = 171,707,574.30
  5. Step 5: Solve for x
    x = 171,707,574.30/15,647.70
  6. Step 6: Final answer
    x = 10,973.34

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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.