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Finding the Fourth Proportional to 28,987.02, 40,002.03 and 16,412.94

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Solution

The fourth proportional to 28,987.02, 40,002.03 and 16,412.94 is: 22,649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.02 : 40,002.03 = 16,412.94 : x
  2. Step 2: Convert to fraction form
    28,987.02/40,002.03 = 16,412.94/x
  3. Step 3: Cross multiply
    28,987.02x = 40,002.03 × 16,412.94
  4. Step 4: Simplify right side
    28,987.02x = 656,550,918.27
  5. Step 5: Solve for x
    x = 656,550,918.27/28,987.02
  6. Step 6: Final answer
    x = 22,649.82

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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.