Home / 43,119.63-64,689.18-13,136.57

Finding the Fourth Proportional to 43,119.63, 64,689.18 and 13,136.57

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Solution

The fourth proportional to 43,119.63, 64,689.18 and 13,136.57 is: 19,707.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,119.63 : 64,689.18 = 13,136.57 : x
  2. Step 2: Convert to fraction form
    43,119.63/64,689.18 = 13,136.57/x
  3. Step 3: Cross multiply
    43,119.63x = 64,689.18 × 13,136.57
  4. Step 4: Simplify right side
    43,119.63x = 849,793,617.87
  5. Step 5: Solve for x
    x = 849,793,617.87/43,119.63
  6. Step 6: Final answer
    x = 19,707.81

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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.