Home / 31,134.84-42,965.48-16,987.64

Finding the Fourth Proportional to 31,134.84, 42,965.48 and 16,987.64

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Solution

The fourth proportional to 31,134.84, 42,965.48 and 16,987.64 is: 23,442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,134.84 : 42,965.48 = 16,987.64 : x
  2. Step 2: Convert to fraction form
    31,134.84/42,965.48 = 16,987.64/x
  3. Step 3: Cross multiply
    31,134.84x = 42,965.48 × 16,987.64
  4. Step 4: Simplify right side
    31,134.84x = 729,882,106.67
  5. Step 5: Solve for x
    x = 729,882,106.67/31,134.84
  6. Step 6: Final answer
    x = 23,442.62

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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.