Home / 31,127.84-42,960.11-17,701.12

Finding the Fourth Proportional to 31,127.84, 42,960.11 and 17,701.12

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Solution

The fourth proportional to 31,127.84, 42,960.11 and 17,701.12 is: 24,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,127.84 : 42,960.11 = 17,701.12 : x
  2. Step 2: Convert to fraction form
    31,127.84/42,960.11 = 17,701.12/x
  3. Step 3: Cross multiply
    31,127.84x = 42,960.11 × 17,701.12
  4. Step 4: Simplify right side
    31,127.84x = 760,441,961.86
  5. Step 5: Solve for x
    x = 760,441,961.86/31,127.84
  6. Step 6: Final answer
    x = 24,429.64

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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.