Home / 31,689-47,534.18-11,976.84

Finding the Fourth Proportional to 31,689, 47,534.18 and 11,976.84

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Solution

The fourth proportional to 31,689, 47,534.18 and 11,976.84 is: 17,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689 : 47,534.18 = 11,976.84 : x
  2. Step 2: Convert to fraction form
    31,689/47,534.18 = 11,976.84/x
  3. Step 3: Cross multiply
    31,689x = 47,534.18 × 11,976.84
  4. Step 4: Simplify right side
    31,689x = 569,309,208.51
  5. Step 5: Solve for x
    x = 569,309,208.51/31,689
  6. Step 6: Final answer
    x = 17,965.52

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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.