Home / 40,921.68-61,382.88-13,219.68

Finding the Fourth Proportional to 40,921.68, 61,382.88 and 13,219.68

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Solution

The fourth proportional to 40,921.68, 61,382.88 and 13,219.68 is: 19,829.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,921.68 : 61,382.88 = 13,219.68 : x
  2. Step 2: Convert to fraction form
    40,921.68/61,382.88 = 13,219.68/x
  3. Step 3: Cross multiply
    40,921.68x = 61,382.88 × 13,219.68
  4. Step 4: Simplify right side
    40,921.68x = 811,462,031.08
  5. Step 5: Solve for x
    x = 811,462,031.08/40,921.68
  6. Step 6: Final answer
    x = 19,829.64

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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.