Home / 31,357.84-43,274.64-17,931.28

Finding the Fourth Proportional to 31,357.84, 43,274.64 and 17,931.28

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Solution

The fourth proportional to 31,357.84, 43,274.64 and 17,931.28 is: 24,745.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,357.84 : 43,274.64 = 17,931.28 : x
  2. Step 2: Convert to fraction form
    31,357.84/43,274.64 = 17,931.28/x
  3. Step 3: Cross multiply
    31,357.84x = 43,274.64 × 17,931.28
  4. Step 4: Simplify right side
    31,357.84x = 775,969,686.74
  5. Step 5: Solve for x
    x = 775,969,686.74/31,357.84
  6. Step 6: Final answer
    x = 24,745.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.