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Finding the Fourth Proportional to 36,009.91, 49,710.48 and 20,899.64

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Solution

The fourth proportional to 36,009.91, 49,710.48 and 20,899.64 is: 28,851.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,009.91 : 49,710.48 = 20,899.64 : x
  2. Step 2: Convert to fraction form
    36,009.91/49,710.48 = 20,899.64/x
  3. Step 3: Cross multiply
    36,009.91x = 49,710.48 × 20,899.64
  4. Step 4: Simplify right side
    36,009.91x = 1,038,931,136.23
  5. Step 5: Solve for x
    x = 1,038,931,136.23/36,009.91
  6. Step 6: Final answer
    x = 28,851.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.