Home / 43,120.68-64,681.20-11,953.68

Finding the Fourth Proportional to 43,120.68, 64,681.20 and 11,953.68

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Solution

The fourth proportional to 43,120.68, 64,681.20 and 11,953.68 is: 17,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,120.68 : 64,681.20 = 11,953.68 : x
  2. Step 2: Convert to fraction form
    43,120.68/64,681.20 = 11,953.68/x
  3. Step 3: Cross multiply
    43,120.68x = 64,681.20 × 11,953.68
  4. Step 4: Simplify right side
    43,120.68x = 773,178,366.82
  5. Step 5: Solve for x
    x = 773,178,366.82/43,120.68
  6. Step 6: Final answer
    x = 17,930.57

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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.