Home / 30,932.31-42,686.70-16,785.15

Finding the Fourth Proportional to 30,932.31, 42,686.70 and 16,785.15

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Solution

The fourth proportional to 30,932.31, 42,686.70 and 16,785.15 is: 23,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,932.31 : 42,686.70 = 16,785.15 : x
  2. Step 2: Convert to fraction form
    30,932.31/42,686.70 = 16,785.15/x
  3. Step 3: Cross multiply
    30,932.31x = 42,686.70 × 16,785.15
  4. Step 4: Simplify right side
    30,932.31x = 716,502,578.58
  5. Step 5: Solve for x
    x = 716,502,578.58/30,932.31
  6. Step 6: Final answer
    x = 23,163.57

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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.