Home / 43,539.84-65,301.12-12,378.24

Finding the Fourth Proportional to 43,539.84, 65,301.12 and 12,378.24

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Solution

The fourth proportional to 43,539.84, 65,301.12 and 12,378.24 is: 18,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,539.84 : 65,301.12 = 12,378.24 : x
  2. Step 2: Convert to fraction form
    43,539.84/65,301.12 = 12,378.24/x
  3. Step 3: Cross multiply
    43,539.84x = 65,301.12 × 12,378.24
  4. Step 4: Simplify right side
    43,539.84x = 808,312,935.63
  5. Step 5: Solve for x
    x = 808,312,935.63/43,539.84
  6. Step 6: Final answer
    x = 18,564.90

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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.