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Finding the Fourth Proportional to 18,762.04, 28,115.25 and 7,655.32

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Solution

The fourth proportional to 18,762.04, 28,115.25 and 7,655.32 is: 11,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.04 : 28,115.25 = 7,655.32 : x
  2. Step 2: Convert to fraction form
    18,762.04/28,115.25 = 7,655.32/x
  3. Step 3: Cross multiply
    18,762.04x = 28,115.25 × 7,655.32
  4. Step 4: Simplify right side
    18,762.04x = 215,231,235.63
  5. Step 5: Solve for x
    x = 215,231,235.63/18,762.04
  6. Step 6: Final answer
    x = 11,471.63

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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.