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Finding the Fourth Proportional to 39,319.08, 58,978.62 and 11,614.92

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Solution

The fourth proportional to 39,319.08, 58,978.62 and 11,614.92 is: 17,422.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,319.08 : 58,978.62 = 11,614.92 : x
  2. Step 2: Convert to fraction form
    39,319.08/58,978.62 = 11,614.92/x
  3. Step 3: Cross multiply
    39,319.08x = 58,978.62 × 11,614.92
  4. Step 4: Simplify right side
    39,319.08x = 685,031,953.01
  5. Step 5: Solve for x
    x = 685,031,953.01/39,319.08
  6. Step 6: Final answer
    x = 17,422.38

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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.