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Finding the Fourth Proportional to 28,110.55, 42,145.07 and 17,014.80

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Solution

The fourth proportional to 28,110.55, 42,145.07 and 17,014.80 is: 25,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.55 : 42,145.07 = 17,014.80 : x
  2. Step 2: Convert to fraction form
    28,110.55/42,145.07 = 17,014.80/x
  3. Step 3: Cross multiply
    28,110.55x = 42,145.07 × 17,014.80
  4. Step 4: Simplify right side
    28,110.55x = 717,089,937.04
  5. Step 5: Solve for x
    x = 717,089,937.04/28,110.55
  6. Step 6: Final answer
    x = 25,509.64

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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.