Home / 31,022.98-42,811.68-16,875.79

Finding the Fourth Proportional to 31,022.98, 42,811.68 and 16,875.79

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Solution

The fourth proportional to 31,022.98, 42,811.68 and 16,875.79 is: 23,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,022.98 : 42,811.68 = 16,875.79 : x
  2. Step 2: Convert to fraction form
    31,022.98/42,811.68 = 16,875.79/x
  3. Step 3: Cross multiply
    31,022.98x = 42,811.68 × 16,875.79
  4. Step 4: Simplify right side
    31,022.98x = 722,480,921.23
  5. Step 5: Solve for x
    x = 722,480,921.23/31,022.98
  6. Step 6: Final answer
    x = 23,288.57

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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.