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Finding the Fourth Proportional to 43,602.16, 65,412.24 and 13,615.60

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Solution

The fourth proportional to 43,602.16, 65,412.24 and 13,615.60 is: 20,426.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,602.16 : 65,412.24 = 13,615.60 : x
  2. Step 2: Convert to fraction form
    43,602.16/65,412.24 = 13,615.60/x
  3. Step 3: Cross multiply
    43,602.16x = 65,412.24 × 13,615.60
  4. Step 4: Simplify right side
    43,602.16x = 890,626,894.94
  5. Step 5: Solve for x
    x = 890,626,894.94/43,602.16
  6. Step 6: Final answer
    x = 20,426.21

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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.