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Finding the Fourth Proportional to 43,580.40, 65,362.75 and 11,559.70

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Solution

The fourth proportional to 43,580.40, 65,362.75 and 11,559.70 is: 17,337.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,580.40 : 65,362.75 = 11,559.70 : x
  2. Step 2: Convert to fraction form
    43,580.40/65,362.75 = 11,559.70/x
  3. Step 3: Cross multiply
    43,580.40x = 65,362.75 × 11,559.70
  4. Step 4: Simplify right side
    43,580.40x = 755,573,781.18
  5. Step 5: Solve for x
    x = 755,573,781.18/43,580.40
  6. Step 6: Final answer
    x = 17,337.47

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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.