Home / 43,119.65-64,679.33-13,539.69

Finding the Fourth Proportional to 43,119.65, 64,679.33 and 13,539.69

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Solution

The fourth proportional to 43,119.65, 64,679.33 and 13,539.69 is: 20,309.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,119.65 : 64,679.33 = 13,539.69 : x
  2. Step 2: Convert to fraction form
    43,119.65/64,679.33 = 13,539.69/x
  3. Step 3: Cross multiply
    43,119.65x = 64,679.33 × 13,539.69
  4. Step 4: Simplify right side
    43,119.65x = 875,738,111.46
  5. Step 5: Solve for x
    x = 875,738,111.46/43,119.65
  6. Step 6: Final answer
    x = 20,309.49

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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.