Home / 40,931.39-61,429.89-21,215.58

Finding the Fourth Proportional to 40,931.39, 61,429.89 and 21,215.58

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Solution

The fourth proportional to 40,931.39, 61,429.89 and 21,215.58 is: 31,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,931.39 : 61,429.89 = 21,215.58 : x
  2. Step 2: Convert to fraction form
    40,931.39/61,429.89 = 21,215.58/x
  3. Step 3: Cross multiply
    40,931.39x = 61,429.89 × 21,215.58
  4. Step 4: Simplify right side
    40,931.39x = 1,303,270,745.69
  5. Step 5: Solve for x
    x = 1,303,270,745.69/40,931.39
  6. Step 6: Final answer
    x = 31,840.38

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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.