Home / 43,430.83-65,125.43-21,218.20

Finding the Fourth Proportional to 43,430.83, 65,125.43 and 21,218.20

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Solution

The fourth proportional to 43,430.83, 65,125.43 and 21,218.20 is: 31,817.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,430.83 : 65,125.43 = 21,218.20 : x
  2. Step 2: Convert to fraction form
    43,430.83/65,125.43 = 21,218.20/x
  3. Step 3: Cross multiply
    43,430.83x = 65,125.43 × 21,218.20
  4. Step 4: Simplify right side
    43,430.83x = 1,381,844,129.92
  5. Step 5: Solve for x
    x = 1,381,844,129.92/43,430.83
  6. Step 6: Final answer
    x = 31,817.13

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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.