Home / 31,130.96-42,960-16,983.92

Finding the Fourth Proportional to 31,130.96, 42,960 and 16,983.92

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Solution

The fourth proportional to 31,130.96, 42,960 and 16,983.92 is: 23,437.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,130.96 : 42,960 = 16,983.92 : x
  2. Step 2: Convert to fraction form
    31,130.96/42,960 = 16,983.92/x
  3. Step 3: Cross multiply
    31,130.96x = 42,960 × 16,983.92
  4. Step 4: Simplify right side
    31,130.96x = 729,629,203.20
  5. Step 5: Solve for x
    x = 729,629,203.20/31,130.96
  6. Step 6: Final answer
    x = 23,437.41

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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.