Home / 30,932.81-42,687.38-16,785.65

Finding the Fourth Proportional to 30,932.81, 42,687.38 and 16,785.65

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Solution

The fourth proportional to 30,932.81, 42,687.38 and 16,785.65 is: 23,164.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,932.81 : 42,687.38 = 16,785.65 : x
  2. Step 2: Convert to fraction form
    30,932.81/42,687.38 = 16,785.65/x
  3. Step 3: Cross multiply
    30,932.81x = 42,687.38 × 16,785.65
  4. Step 4: Simplify right side
    30,932.81x = 716,535,420.10
  5. Step 5: Solve for x
    x = 716,535,420.10/30,932.81
  6. Step 6: Final answer
    x = 23,164.25

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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.